AUSTRIA (1948) Vermunt Lake Dam*. Black print. Scott No B226, Yvert No 713.
AVAILABLE AT $25
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