15th Anniversary Universal Postal Union

FIRST DAY of is ISSUE Art Craft 10TH ANNIVERSARY MONUMENT OF THE UNIVERSAL POSTAL UNION AT BERNE, SWITZERLAND 75th ANNIVERSARY UNIVERSAL POSTAL UNION US POSTAGE AIR MAIL 25¢ SEMINA NOV 30 9-AM mk E UNIVERSAL POSTAL UNION 1874-1940 FIRST 1949 USPOSTAGE AID MAIL TARRY FTS WASH -254 1874-1949 THE UNIVERSAL POSTAL UNION U-S POSTAGE AIR MAIL 25¢ 1874-1949 THE UNIVERSAL POSTAL UNION DAY OF ISSUES U.S.POSTAGE AID MAIL 25¢ 1874-1949 THE UNIVERSAL POSTAL UNION