This 1966 Art Craft official first day cover features the 5¢ stamp issued for the Sixth International Philatelic Exhibition (SIPEX) held in Washington, D.C. The cover bears the May 23, 1966 Washington, DC first-day postmark and includes the signature of Postmaster General Lawrence F. O’Brien.
SIPEX was a major international stamp show that brought together collectors and postal authorities from around the world, highlighting the growing popularity of philately in the mid-1960s. The stamp design incorporates the flags of participating nations and commemorates the event’s role in promoting global stamp collecting.
A notable detail is the large green cachet illustration of the Washington Monument and U.S. Capitol with the “Discover America” slogan, along with the distinctive SIPEX logo showing a statue atop a globe. The cover is addressed to Greeley, Colorado.
A fine example for collectors of U.S. commemoratives, Art Craft cachets, or postal history from the 1960s international exhibitions.
