Inventions
| Set / Name of Stamp | Date of Issue | Denomination | Image |
|---|---|---|---|
| Centenary of Electric LightbulbOctober 21, 1979 | October 21, 1979 | Rs. 1 |   |
| PhonographJuly 20, 1977 | July 20, 1977 | Rs. 2 |   |
| Set / Name of Stamp | Date of Issue | Denomination | Image |
|---|---|---|---|
| Centenary of Electric LightbulbOctober 21, 1979 | October 21, 1979 | Rs. 1 | |
| PhonographJuly 20, 1977 | July 20, 1977 | Rs. 2 | |