Indochina, World Exhibition, Paris Souvenir Sheet overprinted for use in Kouang-Tcheou;
Here is the m.n.h. souvenir-sheet
Rare mixed franking of the souvenir-sheet together with stamps from the Domestic Scences I and II overprinted for the use in Kouang Tcheou paying an overall postage of 37C on international air mail letter sent from Hanoi to France in June of 1938. French arrival cancel on the reverse. Souvenir-sheets on postally used letters are very hard to find.
Registration Nr. 090172