NIUAFO'OU (Tin Can Island) (1993b) Gems*. Diamond*. Volcano*. Progressive proof from Evolution of the Earth series overprinted SPECIMEN. These proofs were produced in strips of 5 with the central stamp printed in the progressive colors as they were added. Each is labelled with a color number, 1=yellow, 2=green, 3=magenta. There are four different strips, with the center stamp containing colors, respectively, 1, 1+2, 3, 1+2+3. This strip is color 3. Scott No 111A, Yvert No 179. Very hard to find as a complete strip!
AVAILABLE AT $50
GERMANY (1968) Zinc sulfide*. Lead sulfide*. MUSTER (specimen) overprint. 1000th anniversary of mining in Harz Mountains. Scott No 979, Yvert No 412.
AVAILABLE AT $15
GERMANY (1969) Brine pipeline*. MUSTER (specimen) overprint. Scott No 1009.
AVAILABLE AT $15
GERMANY (1975) Bituminous coal extraction*. MUSTER (specimen) overprint. Scott No 1179.
AVAILABLE AT $15
GERMANY (1976) European Coal & Steel Community*. MUSTER (specimen) overprint. Scott No 1209.
AVAILABLE AT $15
GERMANY (1989) Symbolic nautilus shell*. Mining symbols*. MUSTER (Specimen) overprint. 100th anniversary of Trade Union of Mining and Power Industry. Scott No 1588, Yvert No 1268.
AVAILABLE AT $15
GERMANY (1991) Entrance* to Zollern II (coal mine). Scott No 1528. Yvert No 1169. "MUSTER" (Specimen) overprint.
AVAILABLE AT $15