US Stamp Values Scott #194: 3c 1880 Washington Special Printing

Last US Stamps Prices Scott 194 from the major stamp sales: 3c 1880 George Washington Bank Note Special Printing. 2015, 2014, 2013, 2012, 2011

The New Amsterdam Collection of United States Rarities - July 10

Price of US Stamp Scott # 207: 1882 3c Washington

The New Amsterdam Collection of United States Rarities - July 10

US Stamp Values Scott 456 - 3c 1916 Washington Coil Perf 10 Vertically

US Stamp Values Scott 394 - 3c 1911 Washington Coil

Auction 142 by David Wood - Issuu

Sadakichi Hartmann papers - Calisphere

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Robert A. Siegel Auction Galleries, Inc. Sale - 968A Page 7

On This Day In History, July 1, 1847, The US Post Office, 42% OFF

3¢ Washington Of 1870-1881 - Stamp Community Forum

On This Day In History, July 1, 1847, The US Post Office, 42% OFF

Jay Smith & Associates: United States: Stamps: Scott #1-39: 1847

US Stamp Values Scott 394 - 3c 1911 Washington Coil