NIGER (1968) Diving*. Scott No C91. Yvert No PA91. Mexico Olympics. Die Proof in dark blue signed by the engraver BETEMPS.
AVAILABLE AT $140
DAHOMEY (1975) Divers*. Die proof in green signed by the engraver MONVOISIN. Montreal Pre-Olympics issue. Scott No C238, Yvert No PA242. Only 28 exist. Rare
AVAILABLE AT $90