Lot 10325 – 1924 50c Olympics unissued design die proof in black and light brown on thin vertically ribbed paper

1924 50c Olympics unissued design (depicting the Roman arena in Nîmes) die proof (stage 4b) in black and light brown on thin vertically ribbed paper, with embossed impression of the printing die and positioning pin holes either side, very fine, signed J. F. Brun