Indochina 1930 airmail covers:
1) 20th Anniversary of First Flight December 1930 commemorative cachet struck with blue ink on this airmail cover to France, postmarked: SAIGON-CENTRAL COCHINCHINE 26-12 30.2)Saigon to Hong Kong China 28 October 19303) Saigon – Bangkok – Amsterdam – Paris 1-12 January 1930.  the second departure of the combined Air Asia-KLM Saigon- Paris service via Bangkok 1-1 30  a two-line, framed cachet (by Dutch airmail.) postmarked: SAIGON-CENTRAL COCHINCHINE 1-1 30 airmail and registration labels