First India National Philatelic Exhibition (INPEX 1970) held at New Delhi, The Auditorium – Modern School, New Delhi from 23-12-1970 to 06-01-1971. Special Cover released with 15 Nos of cancellation with designs of various monuments in Delhi.
| 23-12-1970 : INPEX PO New Delhi | 24-12-1970 : Exhibition Hall |
| 25-12-1970 : Rashtrapati Bhavan | 26-12-1970 : Parliament House |
| 27-12-1970: National Philatelic Museum | 28-12-1970 : Jantar Mantar |
| 29-12-1970 : Humayun Tomb | 30-12-1970 : Red Fort |
| 31-12-1970 : Laxminarayan Temple | 01-01-1971 : Raj Ghat |
| 02-01-1971 : Jama Masjid | 03-01-1971 : Lodi Tomb |
| 04-01-1971 : Purana Qila | 05-01-1971 : India Gate |
| 06-01-1971 : Qutb Minar |
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