1971 6c + (2c) Light Green
10c emerald 1973
10c yellow, brt. blue & light green 1974
1983 5.2c USA Stamped Envelope
13/2c Liberty Tree
4c 1949 Eagle
8c ultramarine & rose red 1972
1986 8.5c The Mayflower Stamped Envelope
2.7c green 1978 Non-Profit
1973 15c Air Post Envelope Hot Air Ballooning
6c blue 1970
1947 5c Air Post Envelope, carmine
8c 1968 Eagle
1973 13c Air Post Envelope, rose red
1973 6c Progress in Electronics: Marconi's Spark Coil and Gap
1 8/10c blue green 1974
15c red,bl & bk (1976) Auto Racing
1971 6c + (2c) Light Blue
2c red 1976
1985 22c American Buffalo Stamped Env.
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