To do an RN number lookup, enter the digits from the garment's tag into the Federal Trade Commission's RN database. It returns the company registered to that number, which tells you who the registrant is, not exactly when the garment was made.
That distinction matters. We see resellers treat an RN as a birth certificate and list a jacket as '1970s' because the number looks old. Then a buyer points out the care label format is from the 90s, and you have a not-as-described message in your inbox. Used right, an RN is one good clue. Used wrong, it is a return waiting to happen.
What an RN number is
RN stands for Registered Identification Number. The FTC issues it to US businesses that manufacture, import, distribute, or sell textile, wool, or fur products. A company can put its RN on the label instead of printing its full name. You will usually find it on the sewn-in tag, often as 'RN 12345' near the fiber content and country of origin.
Three things to know before you search:
- An RN identifies a business, not a single product or production run.
- Companies can be bought, renamed, or merged, and the RN can stay attached to the registrant record.
- A tag may carry a WPL number (wool products) or a CA number (Canadian) instead. These are separate systems.
How to do an RN number lookup, step by step
- Find the tag with the number. Check the side seam, the neck label, and the waistband. Photograph it in raking light if the print is faded.
- Confirm the format. You want 'RN' followed by up to six digits. If you see 'CA' or 'WPL', use the matching lookup instead.
- Open the FTC's RN database and enter the digits only.
- Read the registrant record: company name, business type, and location listed.
- Cross-check the company name against the visible brand label. A mismatch can mean a private-label maker, a licensee, or a relabeled item.
- Search the company name and brand history to narrow the era. Note the finding, then compare it to other tag details.
If nothing comes back, don't panic. Numbers can be inactive, cancelled, or mistyped from a worn tag. Re-read the digits before concluding anything.
What the result can and can't tell you
| Clue | What it can tell you | What it can't tell you |
|---|---|---|
| Registrant name | Who made or sold the garment | Exact year of production |
| Company type and location | Whether it's a maker, importer, or retailer | Where this specific piece was sewn |
| Mismatch with brand label | Private label or licensing | Whether the item is counterfeit |
| RN exists at all | Garment is likely US-market, post-1950s registration era | Authenticity |
The RN program began in the late 1950s, so a tag with an RN is not pre-dating that. That is a floor, not a date. Everything after that needs corroboration.
Dating a garment with more than the RN
Stack evidence. One clue is a guess. Three agreeing clues is a defensible listing line.
- Care label format. Required care labels in the US began in the 1970s. Symbols versus text and fiber-content wording shift over time.
- Country of origin. 'Made in USA' versus a specific import country can bracket a window for a given brand.
- Union labels. An ILGWU or similar union tag, where present, helps you place the piece.
- Zipper and hardware. Metal versus plastic zippers and stamped makers' marks add context.
- Construction. Single-needle stitching, chain-stitch hems, and serger types vary by era.
Write your listing as 'tag consistent with 1980s' when the evidence supports it, and skip 'vintage 1983' unless you can prove it.
Where the RN lookup fits in condition grading
An RN does not change a grade. GradeThread scores condition on a 1.0 to 10.0 scale across five factors: Fabric Condition, Structural Integrity, Cosmetic Appearance, Functional Elements, and Odor & Cleanliness. Age and maker are provenance, which affects what a buyer will pay, but not the tier the garment lands in.
The tag itself, though, feeds the grade in practical ways. A tag that is cut out, frayed, or illegible is a Cosmetic Appearance note, and a missing tag on an item sold as NWT or NWOT raises questions fast. NWT means the original tags are still attached; NWOT means unworn but tags removed. A garment whose RN tag has been snipped is not NWT. Check this before you pick a tier.
Provenance does help with price by grade. A 1980s piece from a sought-after maker in Very Good condition can out-realize a modern piece in Excellent. But the buyer will still expect the condition to be what you say. Describe the tag evidence and the grade separately so neither undercuts the other.
Common mistakes with RN lookups
- Treating the RN as a date. It is a registrant ID.
- Misreading worn digits. A faded 3 and 8 look alike. Check under magnification.
- Assuming a match means authentic. A real RN can be sewn into a fake. Authenticity needs hardware, stitching, and material checks.
- Skipping the tag photo. Buyers who read 'RN verified' want to see the tag. Add a clear label shot to your listing.
Try it on one garment
Pick one piece in your inbox with a readable RN and run the lookup. Then grade the same garment across the five factors and see how the tag evidence and the condition report sit side by side. Grade one garment in GradeThread and you will get a numerical grade, a detailed report, and a certificate a buyer can verify.