Inventions

Set / Name of Stamp Date of Issue Denomination Image
Centenary of Electric LightbulbOctober 21, 1979 October 21, 1979 Rs. 1 Centenary of Electric LightbulbCentenary of Electric Lightbulb
PhonographJuly 20, 1977 July 20, 1977 Rs. 2 Centenary of Sound RecordingCentenary of Sound Recording