Welcome to PSAG

We are now accepting submissions

PSAG, Inc. (Philatelic Stamp Authentication and Grading) provides stamp authentication, philatelic expertizing, stamp grading, and stamp certification for United States and Canadian material—trusted support for serious stamp collections and collectors.

PSAG EXPERTIZES STAMPS FROM:

United States Canada Canadian Provinces Canal Zone Hawaii Great Britain Cuba China Scandinavia

PSAG INC adding more countries as we grow our expert resources

How we help collectors

Expertizing

Opinion on genuineness and identification backed by specialist knowledge and forensic methods where appropriate.

Learn more →

Grading

Consistent evaluation of condition and presentation for certified encapsulation and catalog alignment.

Grading overview →

Online Submissions

Secure online submissions, digital pre-grading, assisted stamp identification, expert status tracking now available only from PSAG.

Online submissions →