USPS pictorial postmarks are free and available for 30 days (usually) from the date shown. Send a self-addressed stamped envelope and pre-stamped envelopes or postcards with your request.
United States Pictorial Cat Postmarks - 2019
CATS ON STAMPS STUDY UNIT
This postmark is available until July 3, 2018.
This postmark is available until June 18, 2018.
Cats on Stamps 40th Anniversary postmark:
September 24, 2019
Cats on Stamps Anniversary Station
135 N. Ohio Ave.
Sidney, OH 45365-9998
This postmark will be available until October 24, 2019
Instructions for obtaining a USPS digital color postmark
Customers may submit #6 or #10 envelopes constructed of paper rated as “laser safe.” The Postal Service™ recommends envelopes of 80-pound Accent Opaque, acid-free, 9/16-inch side seams with no glue on the flap. The maximum size of all digital color postmarks is 2 inches high by 4 inches long. Allow sufficient space on the envelope to accommodate the postmark. Do not use self-adhesive labels for addresses on the envelope. Two test envelopes must be included. There is a minimum of 10 envelopes at 50 cents per postmark required at the time of servicing.Customers must submit a check, money order, or credit card for payment.
These postmarks are available until August 28 and September 1 respectively, extended 30 days past the original dates.