On 18th February 1911, a French pilot, Henri Pequet flew a small Sommer biplane carrying 6,500 letters from Allahabad to Naini.
The journey was brief and lasted just thirteen minutes.
The credit for the start of the airmail service goes to the Commander Sir Walter G Windham and the then post master general of United Provinces, Sir Geoffrey Clarke.
Title: 100 years of the world’s first official airmail flight
Date of Issue: 12 February 2011
Denominations: 500p x 4
Source: India Post