French Indo-China. (Japanese Occupation). 1944. Registered envelope addressed to Hanoi, Tonkin bearing Air Mail SG 199, 5c yellow-green and 'Japanese Occupation' SG 278, 40c slate tied by Dalat/ Annam date stamp '24th Mars 44' in violet with matching registration label and Hanoi R.P. '29/3' and Hanoi/ Bis '29th Mars' on reverse.