How to Read Vintage Clothing Labels and Date Them (A Complete, Honest Guide)

I pick up a lot of garments. Shirts, jackets, polos, knitwear. Some arrive in bundles, some I track down one at a time. And every single time, before I look at the fabric, before I check the stitching, before I even consider the price, I flip the garment over and read the label. It takes about thirty seconds. And in those thirty seconds I can usually tell you what decade something is from, whether the description is accurate, and whether the price makes sense. This guide teaches you to do exactly the same thing.

Reading vintage clothing labels is not complicated. There is no secret knowledge. It is a small set of rules, a handful of key dates, and a bit of practice. Once you know what to look for, you will never look at a secondhand garment the same way again. And that is a genuinely useful skill whether you are shopping at a market, browsing a vintage shop, or scrolling through listings online.

Why labels matter more than you think

A label is a document. It records, often very precisely, the world that garment was made in. The regulations that existed, the trade agreements in place, the unions that were active, the fabrics that were commercially available. Each of those things changed over time in ways that are well documented. So a label is not just a brand identifier. It is a timestamp.

The practical reason to care about this is simple. If you are buying vintage, you want to know you are actually getting vintage. A garment described as "1970s Ralph Lauren" commands a very different price to one that turns out to be from 1998. Understanding the label protects you. And if you ever sell, knowing how to date accurately lets you price with genuine confidence and describe your pieces honestly, which matters to buyers.

Labels also connect to authenticity. Fake vintage is a real thing, and the label is often the first place a reproduction slips up. The font is slightly wrong, the care symbols are too modern, the country of origin does not match the era. I cover authentication in more depth in my guide on how to spot fake vintage Ralph Lauren, but the fundamentals start right here.

The golden rule before you start

This matters enormously and almost no one states it clearly enough. A label tells you the earliest a garment could have been made, not the exact date and certainly not the latest. When a regulation changed, manufacturers did not immediately switch labels overnight. They used up their existing stock first. So a garment might carry a label that technically predates the regulation change by a year or two. And a brand might not adopt a new care symbol standard until long after it became official.

What this means in practice: treat every label clue as a "not before" date. Then cross-reference at least two or three clues before you land on an era. One clue alone is interesting. Three clues pointing to the same decade is confidence.

The care label: the single most useful clue

In 1971, the US Federal Trade Commission made it mandatory for clothing manufacturers and importers to include care instructions on garment labels. Before 1971, care labels were optional. Some brands included them voluntarily, but many did not. This gives us an extraordinarily useful rule of thumb.

No care label at all? Almost certainly pre-1971, and possibly much earlier. This alone does not date a piece precisely, but it does tell you something significant. Combined with other clues, it is often the deciding factor.

Written care instructions in plain English? Think "machine wash warm, tumble dry low." This points to the 1970s. The FTC mandated care instructions but did not yet require the symbol-based system for American garments. Early care labels were text only.

A mix of text and symbols? You are probably looking at something from the late 1970s through the 1980s. The international care symbol system (developed by Ginetex in Europe and adopted gradually across North America) was introduced over this period. Brands moved at different speeds.

Symbols only, no written instructions? Generally points to the 1990s onward, as symbol-only care labelling became increasingly standard across markets.

One important nuance: European brands followed a slightly different timeline. The Ginetex care symbol system was introduced to Europe in 1963, which means some European garments from the mid-1960s already carried symbols while American equivalents had nothing at all. So the care label rule applies most reliably to American made pieces. For European vintage, look for other clues alongside it.

RN and WPL numbers: looking up the maker

On most American made garments you will find either an RN number (Registered Number) or a WPL number (Wool Products Label number). These were issued by the Federal Trade Commission to identify clothing manufacturers, importers and distributors. The key thing to understand is that the number reflects when the company registered, not when the specific garment was made. So it gives you a "not before" date, not an exact year.

Here is how to use them practically. Numbers issued between 1952 and 1959 run from roughly 00101 to 04086. A five-digit RN number generally suggests a garment produced in the 1960s or 1970s. A six-digit RN number points to the 1980s or later. You can look up any RN number for free on the FTC's online database (rfrn.ftc.gov), which will tell you the company name that held the registration. If the company no longer exists, or was absorbed into another brand during a known period, that narrows your date further.

WPL numbers work on the same principle and appear specifically on wool-containing garments, predating the RN system in some cases. If you see a WPL number and no RN number, the garment is likely from the 1950s or earlier.

Union labels: a goldmine for American vintage

If you are dating American vintage from the mid-20th century, union labels are extraordinarily useful. The International Ladies' Garment Workers' Union (ILGWU) was active from around 1900 and its labels appeared inside American-made clothing through to the late 1980s and early 1990s. The Amalgamated Clothing Workers of America (ACWA) and the United Garment Workers of America (UGWA) were also active during overlapping periods.

The ILGWU label changed its design multiple times, and each design maps to a specific window. The labels transitioned from an "AFL" affiliation to a "CIO" affiliation and later to a distinctive red, white and blue design, with each change corresponding to a known historical period. Seeing "Amalgamated Workers of America" or simply "Union Made" on a label suggests production between around 1934 and 1976. The presence of an ILGWU label at all tells you the garment was American made during the union's active years. The specific design tells you which part of that window.

For menswear, which is what I primarily deal with at Revaleur, union labels appear less frequently than on women's clothing, but they do appear on suits, jackets and heavier outerwear from the 1950s through 1970s. When you see one, pay attention to it.

Country of origin: reading geography as history

Where a garment was made tells you a great deal, because global manufacturing shifted dramatically over the decades and those shifts are datable.

• "Made in USA" or "Made in England" (or France, Italy, Germany): Domestic production dominated until the late 1960s and into the 1970s. A "Made in USA" label on a garment with other pre-1970s characteristics is a strong confirmation of age. If the garment reads "Made in USA" but everything else looks 1990s, treat it with some caution. Some American production continued, but it became increasingly rare after the 1980s.
• "Made in Hong Kong," "Made in Taiwan," or "Made in South Korea": These typically indicate production from the 1960s through the 1980s, as these economies became major garment manufacturing hubs during that period.
• "Made in British Hong Kong": This specific wording places the garment before 1997, when Hong Kong was returned to China. Useful for confirming a pre-1997 date.
• "Made in West Germany": This cannot be from after 1990, when reunification made the "West" designation obsolete. A very clear historical marker.
• "Made in China," "Made in Bangladesh," "Made in Vietnam," "Made in Cambodia": These generally point to the 1990s onward for most brands, reflecting the later wave of manufacturing relocation.

One caveat: country of origin alone is not enough. It narrows the window, but the same country might have been the manufacturing base for a brand across three different decades.

Fabric content and the Woolmark: what the fibres tell you

The fibres listed on a label are another layer of evidence, for two reasons. First, certain fabrics simply did not exist until specific points in history. Second, labelling requirements for fabric content changed over time.

Before the 1960s, fabric content was not required on labels at all. Seeing a detailed breakdown of fibre percentages generally means a garment is from the 1960s or later, when content labelling became standard in most Western markets.

The Woolmark logo is one of the most misunderstood clues in vintage dating, and I see it misrepresented by sellers regularly. The first Woolmark logo, indicating 100% pure new wool, was introduced in 1964. If a garment has the Woolmark logo, it cannot be from before 1964. Full stop. Sellers who describe a Woolmark-labelled jacket as "1940s" are either uninformed or hoping you are. The Woolmark Blend logo (for blends containing over 60% wool) came later still.

Synthetic fibres with specific brand names are also useful dating clues. Nylon was first produced commercially in 1939. Lycra (the brand name for spandex or elastane) was invented in 1959. Early synthetics often appeared under their proprietary names: Dacron and Orlon were Du Pont brand names for polyester and acrylic respectively, used widely in the 1950s and 1960s. Seeing these names on a label is an indicator of that era. By the 1970s and 1980s, the generic terms had largely replaced the brand names.

The label itself: material, font and construction

Most guides tell you what the label says. Fewer pay attention to what the label is. The physical label itself carries evidence.

Older labels, particularly from the 1940s and 1950s, were typically woven rather than printed. Woven labels take more time and cost more to produce, and they were considered part of the quality of the garment. The font choices tended toward elegant script or serif typefaces, reflecting the era's design sensibility. These labels were often sewn into seams rather than tacked on with a loose stitch.

Through the 1960s and into the 1970s, printed satin labels became more common as mass production scaled up. The fonts became more varied, often reflecting the graphic design trends of the period. Mod era labels from the mid-1960s often have a very recognisable look: bold, geometric, sometimes in bright colours.

From the 1980s onward, labels became larger and more brand-assertive. This is the era when brands like Ralph Lauren, Tommy Hilfiger and Lacoste started using the label as a statement of identity. Big woven logos, multiple interior labels, branded hang tags. If you pick up a Ralph Lauren piece with a large, prominent woven label featuring the Polo crest in detail, you are almost certainly looking at the 1980s or early 1990s.

By the 1990s, labels started to shrink again. UPC barcodes appeared on hang tags. The general aesthetic became cleaner and more minimal. And from the late 1990s, heat-printed labels that sit directly against the skin (replacing sewn labels entirely) started to appear.

Dating the brands we work with most: Ralph Lauren, Tommy Hilfiger, Lacoste

General rules are useful. Brand-specific knowledge is where real precision comes from. These are the three brands I handle most at Revaleur, and each has its own label history.

Ralph Lauren

The earliest Polo by Ralph Lauren labels, from the late 1960s and early 1970s, are simple. White embroidery on a navy background, just the brand name, no polo player logo, no elaborate crest. The brand launched in 1967, so anything claiming to be Ralph Lauren from before that date is impossible.

The polo player logo became more prominent through the late 1970s. By the 1980s, the labels became larger and more elaborate, often featuring the full brand name and sometimes the retailer. The "big label" era of the 1980s and early 1990s is one of the most collectible periods for Ralph Lauren, and the label size and design reflects it. Sublines like Polo Sport, Polo Country (originally labelled just "Country" before the mid-1990s), and Polo Golf each have their own label evolution and their own collectibility. I have written a full breakdown in my guide on how to value a vintage Ralph Lauren polo, which is worth reading alongside this.

A key authentication point: the stitching on genuine vintage Ralph Lauren labels is consistent and tight. On fakes, the embroidery often looks uneven, the navy background is the wrong shade, or the font proportions are slightly off. The label should feel substantial, not thin or papery.

Tommy Hilfiger

Tommy Hilfiger launched his first signature collection in 1985, so nothing labelled Tommy Hilfiger can predate that. The classic flag logo in red, white and blue became the defining visual from the late 1980s. Early flag labels from this period tend to be larger and more boldly placed. Through the 1990s, the logo became ubiquitous and the brand leaned hard into streetwear and hip-hop culture, making oversized flag-logoed pieces one of the most sought-after categories in vintage menswear today.

The "Hilfiger Athletic" sub-label, with its slanted logo variant, was used specifically during the 1990s and was discontinued in the early 2000s. If you see a Hilfiger Athletic label, you have a 1990s piece. The neck label format also shifted across eras: earlier labels were short rectangles, later versions became longer strips with the flag used as a break between "Tommy" and "Hilfiger."

Lacoste

Lacoste is a fascinating case because the brand has been producing its iconic piqué polo since 1933, which makes genuine vintage Lacoste quite old. Early labels from the late 1960s and early 1970s are typically simple, with the crocodile logo in a clean, unfussy format and without the registered trademark symbol. The appearance of the ® mark after the crocodile logo generally indicates production from the early 1980s onward. Country of origin is particularly useful with Lacoste: pieces made in France carry significant collector interest and tend to predate the brand's later international manufacturing expansion. A French-made Lacoste in good condition from the 1970s or early 1980s can easily command €80 to €150 or more depending on colour and condition.

Beyond the label: construction clues when the label is missing

Labels get cut out. Labels fade. Labels fall off. When the label is gone or unreadable, you are not entirely without evidence. The garment itself carries clues.

Zippers: Metal zippers are generally older. Plastic or nylon coil zippers became widespread from the 1960s onward. YKK, the Japanese zipper manufacturer, became dominant globally during the 1960s and the YKK stamp on a zipper pull is itself a dating clue. Earlier zippers often carry American brand names like Talon.

Stitching and seams: Older, higher-quality garments tend to have more stitches per inch and finer finishing. French seams, hand-stitched hems and careful edge finishing are more common on pre-1970s pieces. As mass production scaled through the 1970s and 1980s, seam finishing became more standardised and sometimes less refined.

Buttons: Plastic buttons became standard from the 1950s onward. Earlier buttons were often made from natural materials like horn, shell or Bakelite. A Bakelite button is a strong indicator of pre-1950s production.

Sizing: Vintage sizing is not modern sizing. A garment labelled size 12 in true vintage women's wear might fit closer to a modern size 6 or 8. For menswear, the cuts of older pieces tend to be more generous in the body and shorter in the sleeve. Half sizes (indicated by "½" after the number) on women's garments suggest production between roughly the 1940s and 1970s, when this sizing convention was in use.

A practical step-by-step process for dating any vintage garment

1. Check for a care label. Present or absent? If absent, you are likely pre-1971. If present, is it text-only, mixed, or symbol-only? This tells you roughly which era you are in.
2. Find the RN or WPL number if it is an American garment. Count the digits. Five digits points toward 1960s to 1970s. Six digits suggests 1980s or later. Look it up on the FTC database if you want the company name.
3. Check the country of origin. Does it match the era suggested by the care label? If it says "Made in West Germany" you have a hard cut-off of 1990. If it says "Made in Hong Kong" that narrows you to a broad 1960s to 1980s window.
4. Look for union labels. For American pieces, an ILGWU or ACWA label confirms domestic production and narrows the era based on the specific label design.
5. Check the fibre content and any logos like the Woolmark. Remember: Woolmark means post-1964 minimum. Named synthetic fibres like Dacron or Orlon suggest 1950s to 1960s.
6. Look at the label itself. Woven or printed? Simple or elaborate? Large and bold, or small and minimal? Match this to what you know about the brand's label evolution.
7. Cross-reference your clues. Do they all point to the same decade? Two or three agreeing clues is a confident date. One clue alone is a starting point, nothing more.

What accurate dating is actually worth

Let me be direct about this because it matters. A correctly dated piece can be priced honestly. An incorrectly dated piece misleads the buyer and eventually damages trust. I have seen pieces listed as "1970s Ralph Lauren" that are clearly mid-1990s based on the label. Not a huge deal in terms of quality necessarily, but the buyer is paying for something they are not getting.

Conversely, I have found pieces that were badly described as "1980s" that turned out, on closer label reading, to be genuinely early 1970s, which made them more interesting, not less. Knowing how to read labels means you spot opportunities that others miss and avoid paying a premium for things that do not deserve it.

Genuine early 1980s Polo Ralph Lauren pieces in good condition, correctly identified, might sell in the €60 to €120 range depending on the piece. A mid-1990s Polo in the same colourway might be €25 to €45. The label, correctly read, is the difference between those two numbers. That is real money.

Reading labels is a skill that compounds over time. The first few times you do it, you are consciously working through the checklist. After a while, you look at a garment and the information just lands. You know immediately that the combination of a text-only care label, a five-digit RN number and "Made in Hong Kong" puts something solidly in the 1970s. You know that a Woolmark logo on something described as "1940s wool" is a red flag. That knowledge is worth having.

At Revaleur, every piece we list has been through exactly this process. We date carefully, describe honestly, and price based on what the label and the garment actually are, not what would be convenient. If you want to see that in practice, take a look at our current collection and you will find the labels described, the eras confirmed, and the pieces priced to reflect what they genuinely are.