FRANCE (2010) Waves. Stage die proof in black signed by the engraver BEAUJARD. Scott No 3780. Yvert No 4439. The value is missing.
AVAILABLE AT $175
CENTRAL AFRICA (1974) Stylized people*. Die proof in black signed by the engraver. World Population Year. Scott No 211, Yvert No 220. Only 28 exist. Rare!
AVAILABLE AT $140
IVORY COAST (1974) WPY emblem*. Die proof in black signed by the engraver JUMELET. World population year. Scott No 379, Yvert No 374.
AVAILABLE AT $100
MONACO (1978) Ship*. Mediterranean sea*. Die proof in black signed by the engraver BETEMPS. Plan RAMOGE for protection of the sea. Scott No 1111, Yvert No 1134.
AVAILABLE AT $160
MONACO (2012) Solar-powered ship PlanetSolar. Pair of die proofs (positive + negative) in black signed by the engraver. Scott No 2674.
AVAILABLE AT $200
NIGER (1974) Infant*. Globe*. Die proof in dark blue signed by the engraver COMBET. World population year. Scott No 297, Yvert No 301.
AVAILABLE AT $100
MONACO (1977) Mediterranean countryside. Industrial pollution. Scott No 1089. Yvert No 1117. Protection of the environment. Die proof in black signed by the engraver JUMELET.
AVAILABLE AT $160