Churchill 5 cent U.S. Postage stamp
1973 Progress in Electronics Stamp
Stamp Title:
6c Marconi's Spark Coil. Progress in Electronics 1973
Issue Year:1973
Date of
Issue: 10th July, 1973
Face Value:6c
Stanley
Gibbons Catalogue No:1505
Scott
Catalogue No:1500
Issue
Copies:60 million
Designer(s):Walter
and Naiad Einsel
Theme(s):Science
& Technology
Description:6c
Marconi's Spark Coil and Gap (1901). Progress in Electronics 1973
1973 Progress in Electronics Stamp
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