SIPEX, Sixth International Philatelic Exhibition Souvenir Sheet 1966 First Issue USA

United States Postage Stamps, SIPEX, Sixth International Philatelic Exhibition 1966 Souvenir Sheet , Washington, DC,

Issued May 23, 1966 in Washington, DC,

First Day of Issue Cover, ArtCraft Engraving Cachet, Unaddressed, Ideal for Framing,

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,