FRANCE (1938) Miners*. Die proof mounted on card and signed by the engraver CHEFFERS. Scott No 343, Yvert No 391. Rare!
AVAILABLE AT $200
SENEGAL (1964) Cement works*. Die proof in black signed by the engraver DECARIS. Scott No 232, Yvert No 237. Only 28 printed. Rare!
AVAILABLE AT $175
MAURITANIA (1975) Blast furnace*. Map of Africa*. Camel*. Die proof in black signed by the engraver COMBET. Mining and Industry development issue. Scott No 334, Yvert No 339. Only 26 exist. Rare!
AVAILABLE AT $140
MAURITANIA (1975) Mining operation*. Dump truck*. Excavator*. SNIM emblem*. Die proof in dark purple signed by the engraver COMBET. Mining and Industry development issue. Scott No 335, Yvert No 340. Only 26 exist. Rare!
AVAILABLE AT $140