10¢ Air Mail Stamp Series of 1968 - Air Mail's Golden Anniversary Year Block of Stamps

FIRST DAY OF ISSUE AIRCRAFT DESIGNED FORY SPEEDS OF 2000 M.P.H. AIR MAIL'S GOLDEN ANNIVERSARY Art Craft USAF YEAR FRAID CONCE Air Mail FRANCISCO 1968 SAN SERIES OF 1968 Nelson Reoria, gel. CA AIR 10C MAIL AIR 10C MAIL FIRST DAY OF ISSUE AIR 10C MAIL AIR 10 MAIL