Vintage Post Card with 2 cents Washington unique stamp dated postmark Dec. 1905

In Milwaukee by E.C. Knopp no. 908.

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The March Collector's Series Sale by Spink and Son - Issuu

Las mejores ofertas en 1901-1910 año de emisión de tarjetas postales de contraportadas de EE. UU. y Papelería

The Postal History of ICAO

Presidents of the United States on U.S. postage stamps - Wikipedia

Las mejores ofertas en 2 céntimos de tarjetas postales de contraportadas de EE. UU. y Papelería

In Milwaukee by E.C. Knopp no. 908.

Vintage Post Card with 2 cents Washington unique stamp dated postmark Dec. 1905

From Correspondenz-Karte to Picture Postcards

Handstamped 2 Cent US Back of Book Postal Cards & Stationery for sale