[vnmission]

Về con tem này của bác Huệ:

Irving Kopf cho biết:

An unusual type of overprint not mentioned in my listing should be noted. The writer has seen two covers - genuine ones - bearing stamps of the Emporer Bao Dai (Yvert & Tellier Type 236, 1/2c. brown) with an "X", in printing ink over his face. Both were postmarked Hanoi, and seemingly were received in Tourane during 1946 (date was illegible or missing). The "X" measured 15-17mm high and 15-20mm wide and was probbaly made by writing brush.

Nguồn: http://www.imnahastamps.com/vietminh...sreference.cfm