Anniversaries and Jubilees
| Set / Name of Stamp | Date of Issue | Denomination | Image |
|---|---|---|---|
| Nicolaus CopernicusJuly 21, 1973 | July 21, 1973 | INR 1.00 |   |
| Dr. G. Armaurer HansenJuly 21, 1973 | July 21, 1973 | 50 nP |   |
| V D Paluskar1872-1931July 21, 1973 | July 21, 1973 | 30 nP |   |
| Michael Madhusudan Dutt 1824-1873July 21, 1973 | July 21, 1973 | 20 nP |   |
| St. Thomas – 19th Death CentenaryJuly 3, 1973 | July 3, 1973 | 20 nP |   |
| Air India – 25 years of International services1948-1973June 8, 1973 | June 8, 1973 | INR 1.45 |   |
| INDIAN MOUNTAINEERINGMay 15, 1973 | May 15, 1973 | 20 nP |   |
| Kumaran Asan 1873-1924April 12, 1973 | April 12, 1973 | 20 nP |   |
| Army Postal Services CorpsMarch 1, 1973 | March 1, 1973 | 20 nP |   |
| Hindustan Aircraft Industries Gnat Jets over India GateJanuary 26, 1973 | January 26, 1973 | INR 1.45 |   |