FRANCE (1968) Postal cheques*. Trial color proofs in vertical strip of 2. Scott No 1202, Yvert No 1542.
AVAILABLE AT $25
UNITED NATIONS (1989) Hydroelectric dam*. Set of 6 imperforate progressive proofs. Scott No 546, Yvert No 559. World Bank. From the UN printer archives. Rare!
AVAILABLE AT $50
ETHIOPIA (1988) 1-birr banknote*. Set of 7 progressive proofs. Scott No 1229, Yvert No 1230.
AVAILABLE AT $100
ETHIOPIA (1988) 5-birr banknote*. Set of 7 progressive proofs. Scott No 1230, Yvert No 1231.
AVAILABLE AT $100
ETHIOPIA (1988) 10-birr banknote*. Set of 7 progressive proofs. Scott No 1231, Yvert No 1232.
AVAILABLE AT $100
ETHIOPIA (1988) 50-birr banknote*. Set of 7 progressive proofs. Scott No 1232, Yvert No 1233.
AVAILABLE AT $100
ETHIOPIA (1988) 100-birr banknote*. Set of 7 progressive proofs. Scott No 1233, Yvert No 1234.
AVAILABLE AT $100
ST. PIERRE & MIQUELON (1969) Treasury building. Trial color proofs in strip of 5. Yvert No 386, Scott No 385.
AVAILABLE AT $80
NEW CALEDONIA (1960) Check writing machine*. Trial color proofs in strip of 5 with multicolor. Postal cheques. Scott No 312, Yvert No 296.
AVAILABLE AT $70