Harry Gordon early cover with Canarias overprints, 1938

Cover to Harry Gordon, 795 Garden St, Bronx, New York, USA. Las Palmas registered mail postmark dated on February 28, 1938. Franked with Canarias air mail overprints Edifil 31-33 (complete), 30, 34-36 (complete) & 39. On the back, mark "FROM THE HARRY A. GORDON COLLECTION / AUTHENTICATED BY H.G.I. STAMP CO. N.Y.". The earliest covers from the Harry Gordon collection go back to 1934.