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 dark brown signed by the engraver COMBET. Mining and Industry development issue. Scott No 334, Yvert No 339. Only 26 exist. Rare!
AVAILABLE AT $140
NEW CALEDONIA (1955) Nickel mine*. Cut down die proof in black. Scott No C26, Yvert No PA 66
AVAILABLE AT $120
FRANCE (1972) Mineshaft*. Polish immigrants*. Die proof in brownish-violet signed by the engraver BEQUET. Scott No 1358. Yvert No 1740.
AVAILABLE AT $140
SENEGAL (1964) Mineral dock*. Die proof in black signed by the engraver DECARIS. Scott No 235, Yvert No 240. Small red ink spot above image.
AVAILABLE AT $120