Poster stamps are stamp-shaped labels made mainly for advertising, exhibitions, tourism, causes or events; they normally did not prepay postage.
Poster stamp versus postage stamp
| Signal | Poster stamp | Postage stamp |
|---|---|---|
| Primary purpose | Promotion, commemoration or fundraising | Payment for a postal service |
| Issuer | Company, exposition, group or charity | Postal authority or authorized postal operator |
| Wording | Slogan, event, product or cause | Country/postal identity and value or service |
| Catalog evidence | Specialist cinderella or poster-stamp references | Official postal record and major postage catalogs |
Six-step identification workflow
- Transcribe all wording, dates and initials.
- Identify the named organization and whether it had postal authority.
- Look for denomination or postal-service wording, but treat it as a clue rather than proof.
- Search official issue records and postage catalogs.
- If absent, search poster-stamp, exhibition-label and charity-seal references.
- Record the conclusion and confidence level; do not use an uncertain label on mail.
Why people collect them
Poster stamps preserve commercial design, world’s fairs, local events, travel promotion and social campaigns that may not appear on official postage. Value depends on documented rarity, demand, condition, design, maker and provenance—not simply age. Keep them in archival mounts and describe repairs, missing gum, thins and toning.
Related objects
Charity seals, Christmas seals, exhibition labels, local posts and revenue stamps may look similar but have different purposes. If a label arrived with a veterans’ fundraising letter, see our DAV seal identification guide.
Sources and review note
- Smithsonian National Postal Museum — About U.S. Stamps
- American Philatelic Society — Cinderella collecting
Reviewed August 31, 2026. Postal products, prices and rules can change; verify current USPS guidance before mailing or buying.