FRANCE (1956) Flammarion*. Observatory*. Die proof in black signed by the engraver SERRES. Flammarion did much to popularize astronomy and believed in extraterrestrial life, including advanced civilizations on Mars. Scott No 792,Yvert No 1057.
AVAILABLE AT $140
MONACO (1996) Discovery of Neptune. Set of 2 die proofs (pos & neg) in black signed by the engraver ALBUISSON. Scott No 2014.
AVAILABLE AT $200
NEW CALEDONIA (2002) Edmond Caillard*. Telescope*. Stars*. Set of 2 die proofs (pos & neg) in blue signed by the engraver ALBUISSON. Scott No 902.
AVAILABLE AT $200
MONACO (2005) Edmund Halley. Die proof in black signed by the engraver ANDREOTTO. Scott No 2386.
AVAILABLE AT $140
MONACO (2005) Gerard Kuiper. Die proof in black signed by the engraver ANDREOTTO. Scott No 2387.
AVAILABLE AT $140
MONACO (2005) Clyde Tombaugh. Die proof in black signed by the engraver ANDREOTTO. Scott No 2388.
AVAILABLE AT $140
MONACO (2009) Francesco Grimaldi*. Craters of the moon*. Set of 2 die proofs in black signed by the engraver ANDREOTTI. Scott No 2546. Grimaldi was also a mathematician who measured the rate of falling objects and discovered the diffraction of light.
AVAILABLE AT $200