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
