Estimated value: US$428,654. The Blue Military Stamp is a blue stamp for military use in China. In 1953, a set of three stamps, in orange, brownish red and blue, were designed and issued to the ...

A print for the USPS Emancipation Proclamation Forever Stamp. The rectangular sheet has a blue and yellow background and is covered in text in black ink that reads [HENCEFORWARD / SHALL BE / FREE / ...