How to identify a stamp
A step-by-step approach to identify a stamp and estimate its condition and likely value. This guide covers visual checks, measurement tools, reference catalogs, scanning tips and next steps for collectors and philately beginners.
Quick facts
- Example
- Penny Black issued 1840
- Catalog
- Scott Catalogue
- Catalog
- Michel Catalogue
- Catalog
- Stanley Gibbons
- Tool
- Perforation gauge
Start with the basics
Handle the stamp carefully and look for the country name, denomination, and any clear design features. Note whether the stamp is mint or used, and whether a cancellation covers key details. Record these basics so you can identify the stamp later: country, denomination, and visible design elements. These simple observations are the first step in philately and help narrow search results in catalogues and online resources.
Measure and inspect physical features
Examine perforations, paper, gum and any watermarks. Use a Perforation gauge to count perforation teeth per 2 centimetres and note the result exactly. Hold the stamp to light or use watermark fluid to reveal a watermark. Look for printing type, centring and condition issues such as thins, creases, or tears; these affect value. If possible, use a loupe or a scanner for a close image to check fine details.
Use catalogs and reference lists
Compare your observations with established stamp catalogs. Search the Scott Catalogue, the Michel Catalogue, and Stanley Gibbons to match design, perforation, watermark and denomination. Catalog entries give identifying numbers and short descriptions that let you confirm the match and see how specialists list varieties and issues. Record the catalog number you find so you can reference it when you collect or trade.
Work with a good scan or photograph
A clear scan makes identification faster. Place the stamp face-up, set the scanner for high resolution, and save an image that shows edges and perforations. Use the image to crop tight around the stamp and to compare side-by-side with catalog images or online databases. A scanner image helps other collectors or experts verify details without risking damage to the original stamp.
Check historical and notable examples
When you think you have an early or notable piece, cross-check with authoritative examples. For instance, compare your item to well-documented issues such as Penny Black issued 1840 to see differences in printing and paper. Not every unusual look means rarity; many variations are common and listed in catalogs. Verifying against trusted references prevents mistakes when estimating the stamp's significance.
Final verification and what to do next
After you identify likely catalog numbers and record perforation, watermark and condition, consult specialist forums or a dealer for confirmation if needed. Keep clear scans and notes for each item you collect. If you prefer a digital identifier, try a dedicated tool that can scan and suggest matches; one such tool is Stamp Identifier.
Common questions
- What is the fastest way to identify a stamp?
- Record country, denomination and any printed text, then take a high-resolution scan. Use those details to search catalogs and online databases. A clear image plus catalog keywords usually yields a quick match.
- How do I measure perforations correctly?
- Use a Perforation gauge and align the stamp so the perforation holes match the gauge markings. Count the number of perforation holes per standard span and record that figure next to other identifying details.
- Which catalogs should I consult?
- Start with the Scott Catalogue for broad coverage, consult the Michel Catalogue for European items, and check Stanley Gibbons for British and Commonwealth issues.
- Can a scanner damage my stamps?
- A flatbed scanner used with care will not damage a stamp. Place the stamp on a clean, dry surface, avoid pressing down on delicate items, and keep scans brief. For valuable or fragile stamps consider photographing rather than scanning.