France. 1937 Paris Exhibition 1f. 50 greenish blue, Epreuve de luxe, two singles and a block of four misperforated (piquage a cheval), single showing Doctors blade flaw and two Coin daté blocks of four, also single on cover, mint or original gum, the proof with some wrinkles, chiefly fine. Spink Maury 336 (Image1)

Est. £100-200