100th Anniversary Smithsonian Institution, 1946 First Issue USA

United States Commemorative Postage Stamp, 100th Anniversary Smithsonian Institution, For the Increase and Diffusion of Knowledge among Men,

Issued August 10, 1946, Washington, D. C.,

First Day of Issue Cover, FDC, Art Craft Engraving Cachet, Unaddressed,

Cover in Removable Transparent Poly Sleeve and Mailed With Protection,

Made in the USA


Genuine First Day of Stamp Issued Cover Cancelled on the First Day of Issue Date by the U.S. Postal Service,