Percy Lavon Julian Chemist 29¢ 1993 20er Streifen Doc Sc # 2746
CHF 5,950 Gebote4T 8Std 46 Min
US Science Stamps
Doc Sc# 1502 Telephone Centennial 13¢ 1976 Sheet of 50 MNH
CHF 3,96
Doc Sc# 1500 Progress in Electronics: Marconi's Spark Coil 6¢ 1973 Sheet 50 MNH
CHF 3,96
Doc Sc # C86 Electronics Progress 11¢ 1973 Sheet of 50 MNH
CHF 4,76
Doc Sc # 1502 Progress in Audio and Visual Electronics 15¢ 1973 Sheet of 50 MNH
CHF 6,34
Doc Sc# 1501 Electronics Progress 8¢ 1973 Sheet of 50 MNH
CHF 3,96
Doc Sc# 1410-13 Anti pollution 6¢ 1970 Sheet of 50 MNH
CHF 5,55
Doc Sc# C69 Robert H. Goddard Airmail 8¢ 1964 Sheet of 50 MNH
CHF 4,72
Doc Sc# 1502 Chemie Hundertjahrfeier 13¢ 1976 Bogen mit 50 postfrisch
CHF 9,51
DOC Scott #2031 Science and Industry 20¢ Sheet of 50 MNH OG VF/XF
CHF 7,93
DOC Scott #2087 Health Research 20¢ 1984 Sheet of 50 MNH XF
CHF 9,91
Doc Scott #2699 Theodore von Karman 29 ¢ Blatt mit 50 postfrisch OVP Sehr guter Erhaltungszustand
CHF 17,40
Doc Sc# 1107 INT'L GEOPHYSICAL YEAR 3¢ 1957-58 Sheet of 50 MNH
CHF 3,96