I see all these worth a shots and raise you a Stamp Book BarCode. : r/USPS

DMM 601 Mailability

USPS stamp printed at PO what is this barcode on stamp? Is it traceable 😬 : r/USPS

This stamp is not like the others : r/USPS

From the Library of Stamp, Choose Library Stamp, Ex Libris Stamp, Book Reader Gift, This Book Belongs To, Book Stamp, Custom Book Lover Gift

Are vintage postage stamps worth more if they are postmarked? - Quora

Can't ask the USPS sub so am asking here. Does this need a stamp? : r /usps_complaints

Library Stamp, Read Love Return, Custom From the Library of Book Stamp, Teacher Library Stamp, Personalized Self Inking or Wooden

This poster at the Post Office has the stamp on the wrong side of the envelope. : r/mildlyinteresting

Costco is cracking down on card sharing : r/Costco

Picture Sundays: US Postal Service Creates World's Ugliest Stamp

Will US postage stamps with 'forever' printed on them still be valid after the US Postal Service (USPS) changes them? - Quora

Postal Bulletin 22198 - January 18, 2007 - USPS.com® - About

I got this international stamp from the self-service kiosk, does it work the same as a regular stamp when I put it on a postcard? : r/USPS