United States Test Stamp TD136

United States · 2004 · No denomination (test stamp)

A plain white rectangular test stamp with a black border, featuring 'U.S. POSTAGE' at the top, 'TEST' in the center, and 'TD136' at the bottom, along with plate number '1111'.

This stamp was produced by the United States Postal Service in 2004-2005 for internal testing purposes, likely for new self-adhesive coil formats and die-cutting processes, rather than for postal use.