IVORY COAST (1961) Ayamé Dam*. Sepia printers proof with control punch at bottom. Scott No 192, Yvert No 200. Only 3-4 exist. Very rare!
AVAILABLE AT $200
EAST GERMANY (1968b) Pöhl Dam*. Set of 4 imperforate progressive proofs from the archives of the East German printers. Each proof shows the addition of a single color. Scott No 1040, Yvert No 1097. Only about 10 copies exist. Rare!
AVAILABLE AT $200
EAST GERMANY (1968c) Ohra Dam*. Set of 4 imperforate progressive proofs from the archives of the East German printers. Each proof shows the addition of a single color. Scott No 1041, Yvert No 1098. Only about 10 copies exist. Rare!
AVAILABLE AT $200
EAST GERMANY (1968d) Rappbode Dam*. Set of 4 imperforate progressive proofs from the archives of the East German printers. Each proof shows the addition of a single color. Scott No 1042, Yvert No 1099. Only about 10 copies exist.Rare!
AVAILABLE AT $200
VENEZUELA (1985) Hydro-electric dam*. Imperforate sheet of 10 phase proofs lacking value. Scott No 1351, Yvert No 1203.
AVAILABLE AT $40
NEW CALEDONIA (1959) Yaté dam*. Sepia printer's proof. Scott No C28, Yvert No PA70. Only 3-4 exist. Very rare!
AVAILABLE AT $200