USA 1920s to Date Common Stamps

1968 Hemisfair '68 - Single 6c Postage Stamp - MNH, OG - Sc# 1340 - CX295

1969 John Wesley Powell - 1869 Expedition - Single 6c Postage Stamp - Sc# 1374 - MNH,OG

1969 John Wesley Powell Plate Block Of 4 6c Postage Stamps - MNH, OG -Sc# 1374 - CX359

1972 Osteopathic Medicine Block of 4 8c Postage Stamps - MNH, OG - Sc# 1469

1972 Osteopathic Medicine Single 8c Postage Stamp - Sc# 1469 - MNH,OG

1973 Marconi Coil Progress in Electronics Single 6c Postage Stamp - Sc# 1500 - MNH,OG

1973 Progress In Electronics Plate Block of 4 6c Postage Stamps - MNH, OG - Sc# 1500

1973 Progress In Electronics Plate Block Of 4 8c Postage Stamps - Sc# 1501 - MNH, OG - CX561

1973 Progress In Electronics Single 8c Postage Stamp - Sc# 1501 - MNH, OG - CX561

1973, Electronics Progress, Plate Block of 4 11c Airmail Postage Stamps - Sc# C86 - MNH,OG

1974 Space Skylab Plate Block Of 4 10c Postage Stamps - Sc# 1529 - MNH, OG - CX480

1974 Space Skylab Single 10c Postage Stamp - Sc# 1529 - MNH - CW486a

1975 Space Apollo Soyuz Block of 4 10c Postage Stamps - MNH, OG - Sc# 1569

1975 Space Apollo-Soyuz (Russia) Pair - Scott# -1569-1570 - MNH, OG - CX665

1976 Alexander Graham Bell Plate Block of 4 13c Postage Stamps - MNH, OG - Sc# 1683

1976 Alexander Graham Bell Sigle 13c Postage Stamp - Sc# 1683 - MNH,OG

1976 Chemistry Plate Block of 4 13c Postage Stamps - MNH, OG - Sc# 1685

1976 Chemistry Single 13c Postage Stamp - MNH, OG - Sc# 1685

1976 Clara Maass - Malaria - Block Of 4 13c Postage Stamps - Sc# 1699 - MNH, OG - CT43a

1976 Clara Maass Block Of 6 13c Postage Stamps - Sc# 1699 - MNH, OG - CT43b

1977 Centennial Of Sound Recording Plate Block Of 4 13c Postage Stamps - MNH, OG - Sc# 1705 - CX341

1977 Talking Pictures Anniversary Plate Block Of 4 13c Postage Stamps - MNH, OG - Sc# 1727 - CX328

1978 PAP Test Early Cancer Detection Plate Block Of 4 13c Stamps - MNH, OG - Sc# 1754 - CX334

1978 PAP Test Early Cancer Detection Single 13c Postage Stamp - Sc# 1754 - MNH,OG