Kalia Bhomora Bridge Bridge, Brahmaputra River, Boat Rs. 2 Commemorative (Traffic Light Stamp)

18 Feb 61 First Aerial Post – Golden Jubilee 1911 – 1961. Event, Airmail, Aircraft, Boeing 707, Humber Sommer bi-Plane, Allahabad-Naini Airmail Flight, 15 nP. (Hinged/Gum washed stamp)