China. (Indo-China). 1937. Air Mail envelope written from France addressed to Hanoi, Indo-China bearing France Yvert 289, 1f75 lilac (pair) tied by Nice date stamp, underpaid with 'T' hand-stamp and m/s 'o.60', bearing Indo-China postage dues Yvert 71,20c red/orange (3) applied and tied by Hanoi / Tonkin and tied by Hanoi/Tonkin date stamp Very nice combination.