NORTH KOREA (2012) Youth activities. Photo proof of S/S from printer's archive. KSC No 4841. Only 5-10 printed as test print prior to actual printing of the stamps. Each has official Korea Post stamp on reverse.
AVAILABLE AT $100
GERMANY (1988) Airbus A320*. ISDN network*. Set of 2 with MUSTER (Specimen) overprint. Scott Nos 1552-3, Yvert Nos 1199-1200.
AVAILABLE AT $25
NORTH KOREA (1972) Man at control panel*. Heavy industry*. Preliminary artwork from the archives of the North Korea printers. Watercolor on posterboard, measuring 17.5 x 10.5 cm. Inscribed on back with official stamp and notes in Korean. Scott No 1067, KSC No 1086.
AVAILABLE AT $250
NEW CALEDONIA (1994) Microscope* examining Earth*. Images flowing through computer screen*. Imperforate corner block of 4. Scott No C268, Yvert No PA325. ORSTOM 50th anniversary.
AVAILABLE AT $25
NEW CALEDONIA (1994) Microscope* examining Earth*. Images flowing through computer screen*. Imperforate pair. Scott No C268, Yvert No PA325. ORSTOM 50th anniversary.
AVAILABLE AT $12
AVAILABLE AT $30
AVAILABLE AT $50
MOROCCO (1965) Punched tape writer*. Die proof in colors different from issued stamp and signed by the artist. ITU Centenary. Scott No 119, Yvert No 484. Die proofs by typography are very rare!
AVAILABLE AT $175
AVAILABLE AT $20