BLACK TEXT W/ DOUBLE PRINTING, ONE OVER GUM.

(1966) AIR MAIL ISSUE, COMMEMORATIVE – 50TH ANNIV OF NAVAL AVIATION SCHOOL.

12p, BLUE, BLACK & RED. NATIONAL SATIN PAPER, WAVY RAYS WATERMARK PARALLEL TO THE SMALLEST SIDE. BLOCK OF 4 STAMPS WITH SHEET CORNER MARGIN COPY. NEW, MNH

VARIETY: DOUBLE PRINTING OF BLACK TEXT, ONE PIECE AT BACK OF THE STAMP -OVER GUM-.