Symbols
| Set / Name of Stamp | Date of Issue | Denomination | Image |
|---|---|---|---|
| Indian Standards Institution Silver JubileeMay 19, 1972 | May 19, 1972 | 20 nP |   |
| Set / Name of Stamp | Date of Issue | Denomination | Image |
|---|---|---|---|
| Indian Standards Institution Silver JubileeMay 19, 1972 | May 19, 1972 | 20 nP | |