1926 (4 Apr) Calcutta-Bangkok First Flight cover franked with 3x1a George V adhesives (uncanceled) over the Thai-themed "Avail Air Mails and Save Time" label and addressed to Bangkok, Thailand, "By Danish Fokker Aeroplanes 1925, Calcutta to Bangkok" flight cachet, additional lightly struck "KGL Dansk Konsulat Calcutta" and "Royal Danish Legion" handstamps at left, v.f., only 41 covers were carried by Lts. Botved and Herschend