How to Identify Rare Stamps: Issue, Gum, Watermark and Condition
Identify rare stamps by issue, denomination, perforations, gum, watermark, cancellation, centering, faults, and expertization risks.

Found old stamps and want to know if they matter?
Upload photos. We identify the material, check real sales, and show the right appraisal path.
Start a stamp appraisalStart an appraisalIdentification checklist
- Country, issue name, year, denomination, color, perforation, watermark, gum, and cancellation.
- Look for errors, overprints, certificates, rare postmarks, complete covers, and old catalog notes.
- Check thins, tears, missing perforations, foxing, fading, hinges, regumming, and album damage.
Auction evidence from Appraisily's database
These records are market examples, not final appraisals. They show that stamp results depend on exact contents, not age alone.
| Category | Sale | Date | Lot | Realized | What it shows |
|---|---|---|---|---|---|
| Specialist stamp group | Fukuoka Yumekai Auction | May 11, 2024 | A BOOK OF 30 KOREAN STAMPS | JPY 250000 | Specialist country demand can matter. |
| British colonial album | Artemis Fine Arts | Apr. 3, 2026 | 19th to 20th C. British Colonial Stamp Album | USD 400 | Older focused albums need page review. |
| Chinese stamp album | Eddie's Auction | Mar. 15, 2026 | Chinese 6 Page Stamp Album & Stamps | USD 475 | Regional demand can lift value. |
Photo checklist
- Album page, individual stamp close-ups, back of stamp only if safe, certificate, catalog note, and full collection view.
- Perforations, gum, hinges, cancellations, watermarks if visible, thins, tears, foxing, and fading.
Choose your next step
Use the path that matches the decision you need to make about the item.
Need a signed report?
Use this for insurance, estate, donation, resale, or documented value decisions.
Start a signed reportNot sure it is worth appraising?
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Find local specialistsSee what the report looks like
Sample reports show how photos, comparable evidence, condition notes, and a value conclusion are documented.
Need rare stamps checked before selling or submitting for expertization?
Upload front and back images, watermark or perforation notes, cancellation details, album context, faults, and any certificates.
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