CZECHOSLOVAKIA (1962) Man before cosmos*: sun*, planets*, stars*, rocket*, atomic symbol*. Die proof in black. Space research. Scott No 1105. Yvert No 1208. Czechoslovakia Die Proofs are rare with usually no more than one to five copies printed.
AVAILABLE AT $175
CZECHOSLOVAKIA (1967) Ondrejov observatory*. Galaxy*. Series of 3 die proofs showing various stages of printing. Scott No 1489. Czech proofs are very rare - only 2-5 were ever made! File holder punches at top.
AVAILABLE AT $225
CZECHOSLOVAKIA (1969) Milan Stefanik*. French General*. Die proof in blue. Scott No 1625. Czech proofs are very rare - only 2-5 were ever made!
AVAILABLE AT $175
CZECHOSLOVAKIA (1970) Maximilian Hell*. Die proof in black signed by the engraver. Hell was a Jesuit and published one of the early "Ephemerides" and made observations on the transit of Venus in 1769. Scott No 1670, Yvert No 1768. Czech proofs are very rare - only 2-5 were ever made!
AVAILABLE AT $225
FRANCE (1958) Urbain Le Verrier*. Die proof in black signed by the engraver DECARIS. Le Verrier discovered the planet Neptune by theoretical calculations and also held a position as administrator of tobacco. Scott No 870, Yvert No 1147.
AVAILABLE AT $140
MALI (1980) Kepler*. Die proof in black signed by the engraver MONVOISIN and also by the designer!. Scott No C388, Yvert No PA386.
AVAILABLE AT $160
CAMBODIA (1974) Copernicus*. Die proof in green of gold foil stamps. Scott Nos C48-9. Michel Nos 398-9. These proofs were printed in Switzerland and bear the raised imprint "IMPRIMERIE DES TIMBRES POSTES - SUISSE."
AVAILABLE AT $50
CENTRAL AFRICA (1986) Halley's comet*. Die proof in violet of gold foil stamps. Michel Nos 1247-8.. These proofs were printed in Switzerland and bear the raised imprint "IMPRIMERIE DES TIMBRES POSTES - SUISSE."
AVAILABLE AT $50
GUINEA (1986) Halley's comet*. Die proof in red of gold foil stamps. Unlisted in Scott. Michel Nos 1113-4. These proofs were printed in Switzerland and bear the raised imprint "IMPRIMERIE DES TIMBRES POSTES - SUISSE."
AVAILABLE AT $50