National Postal Museum
4 1/2c White House approved large die proof
Bureau of Engraving and Printing · July 11, 1938
This is a 4 1/2-cent White House Large Die Proof, originally attached by staples to certified plate proof 21972 as a reference copy for the Bureau of Engraving and Printing to verify approved color gray, ink GY-20-R, dated January 9, 1939. The White House appeared on a stamp for the first time with this value from the Presidential Series.
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