Doc Sc# 1502 Telephone Centennial 13¢ 1976 Sheet of 50 MNH
£3.80
US Science Stamps
Doc Sc# 1500 Progress in Electronics: Marconi's Spark Coil 6¢ 1973 Sheet 50 MNH
£3.80
Doc Sc# C86 Electronics Progress 11¢ 1973 Sheet of 50 MNH
£4.56
Doc Sc# 1502 Progress in Audio and Visual Electronics 15¢ 1973 Sheet of 50 MNH
£6.09
Doc Sc# 1501 Electronics Progress 8¢ 1973 Sheet of 50 MNH
£3.80
Doc Sc# C69 Robert H. Goddard Airmail 8¢ 1964 Sheet of 50 MNH
£4.53
Doc Sc# 1410-13 Anti pollution 6¢ 1970 Sheet of 50 MNH
£5.33
Doc Sc# 1502 Chemistry Centenary 13¢ 1976 Sheet of 50 MNH
£9.13
DOC Scott #2031 Science and Industry 20¢ Sheet of 50 MNH OG VF/XF
£7.61
DOC Scott #2087 Health Research 20¢ 1984 Sheet of 50 MNH XF
£9.51
DOC Scott #2699 THEODORE VON KARMAN 29¢ Sheet of 50 MNH OG VF/XF
£16.70
Doc Sc# 1107 INT'L GEOPHYSICAL YEAR 3¢ 1957-58 Sheet of 50 MNH
£3.80