1933 – First Regular Mail Service to Calcutta
First Regular Mail Service to Calcutta
1 July 1933
From 1 July 1933, the Imperial Airways London – Karachi – Delhi airmail service was extended to Calcutta via Cawnpore and Allahabad.
A special rectangular postmark (Karachi-Calcutta 7 Jly First Airmail) was applied to covers. Mail arrived in Calcutta on 8 July.