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Source:
Colnect
Issued by:
United States
Function:
postage
Date:
9/21
/
1983
Denom:
20c
Color:
multicolored
Design type:
American inventors
Design:
Edwin Armstrong
Watermark:
unwmk
Perf:
11
Sort pos:
2
Catalog value:
In collections:
used
(Stan Shebs)
Prev:
20c d=Charles Steinmetz
Next:
20c d=Nikola Tesla (1959)
External links:
Colnect 94204-..tes_of_America
