DAHOMEY (1967) Heliograph*. Piroque*. Delicately had colored (different from final stamp) die proof signed by the engraver DERREY. Scott Nos J34-5, Yvert Nos TT37-8. Very rare!
AVAILABLE AT $350
FRANCE (1973) Pyramid*. Sun*. Ernest Renan*. Die proof in black signed by the engraver GAUTHIER. Scott No B464, Yvert No 1745.
AVAILABLE AT $80
MAURITANIA (1964) Sun*. Tracking station*. Die proof in black signed by the engraver DURRENS. Year of the Quiet Sun. Scott No 176, Yvert No 178. Attractive!
AVAILABLE AT $120