Stamps of India, 4 base month
1 to 50 of 279
postage
1932, Apr 22 wmk. mult stars (no perf info)
| X | 9p | dkgrn | King George V with Indian emperors crown | .20 | ||
| X | 1a3p | vio | King George V with Indian emperors crown | .20–.30 | .20 | |
| X | 3a6p | dpbl | King George V with Indian emperors crown | .30–1.00 | .20 |
1953, Apr 16
| X | 2a | blk | locomotive | .20 |
1957, Apr 1 1957 issue map of India (14 stamps)
| X | 1np | blgrn | map of India | — | — | |
| - | 2np | ltbrn | map of India | — | — | |
| X | 3np | dpbrn | map of India | .20 | .20 | |
| X | 5np | brtgrn | map of India | .20 | .20 | |
| X | 6np | gray | map of India | .20 | .20 | |
| - | 8np | map of India | ||||
| X | 10np | dkgraygrn | map of India | .20 | .20 | |
| X | 13np | brtcarrose | map of India | .20 | ||
| X | 15np | vio | map of India (1958) | .20 | ||
| X | 20np | bl | map of India | .20 | ||
| X | 25np | ultra | map of India | — | — | |
| X | 50np | org | map of India | — | — | |
| X | 75np | redvio | map of India | .20 | ||
| - | 90np | brtpur | map of India (1958) |
1958, Apr 18 Karve 100th issue
| X | 15np | orgbrn | Dr. D. K. Karve | .20 | .20 |
1958, Apr 30
| X | 15np | bl | Westland Wapiti & Hawker Hunter | .20 | ||
| X | 90np | ultra | Westland Wapiti & Hawker Hunter |
1959, Apr 15 Sir Jamsetjee Jejeebhoy 100th issue wmk. Asokan capital
| - | 15np | brn | Sir Jamsetjee Jejeebhoy | .20 | .20 |
1961, Apr 17
| X | 15np | graygrn & brn | Shivaji on horseback |
1962, Apr 7 malaria eradication issue
| X | 15np | cl & yel | .20 | .20 |
1965, Apr 5
| X | 15p | ultra | freight ship Jalausha |
1965, Apr 15 Lincoln death 100th issue
| X | 15p | yel & dkbrn | Abraham Lincoln | .20 |
1966, Apr 9
| X | 15p | dkgrn | Kambar | .20 | .20 |
1966, Apr 14 Dr Bhimrao Ambedkar death 10th issue
| X | 15p | graypur | .20 | .20 |
1966, Apr 23
| X | 15p | orgbrn | Kunwar Singh | .20 | .20 |
1967, Apr 16 Nandalal Bose memorial issue
| X | 15p | brn |
1969, Apr 1
| X | 20p | Rafi Kidwai |
1969, Apr 11 ILO 50th issue
| - | 20p | .20 | .20 |
1969, Apr 13 Amritsar massacre 50th issue
| - | 20p |
1970, Apr 22 Lenin 100th issue
| X | 20p | multi | Lenin |
1971, Apr 14
| X | 20p | multi | Ramana Maharshi |
1971, Apr 29
| - | 20p | dkgrn | Hamsa Damayanti & Raja Ravi Varma |
1971, Apr 30
| - | 20p | Dadasaheb Phalke |
1973, Apr 10 Bangladesh independence 1st anniversary issue
| - | 20p | multi | flower with flag of Bangladesh & map of Bangladesh | .20 | .20 |
1973, Apr 12 Kumaran Asan 100th issue
| - | 20p | multi | Kumaran Asan |
1973, Apr 13 Honoring the martyrs of the massacre of Jallianwala Bagh issue
| - | 20p | multi | flame & flag of India |
1973, Apr 14
| - | 20p | multi | Bhimrao R. Ambedkar |
1974, Apr 15 Indian masks
| - | 20p | multi | Sun indian mask | |||
| - | 0.50r | multi | Moon indian mask | |||
| - | 1r | multi | Narasimha indian mask | |||
| - | 2r | multi | Ravana indian mask |
1975, Apr 8 Army Ordnance Corps 200th issue
| - | 25p | multi | Stylised Cannons |
1975, Apr 11 Arya Samaj 100th issue
| - | 25p | multi | Arya Samaj Emblem |
1975, Apr 12 World Hindi Convention 1975 issue
| - | 25p | Saraswati & inscription in Hindi | — | — |
1975, Apr 12 World Telugu Conference issue
| - | 25p | Saraswati, inscription in Telugu | — | — |
1975, Apr 19 Launching of 1st Indian satellite issue
| - | 25p | multi | Aryabhata Satellite |
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