China. (North Eastern Provinces - Manchuria). 1946. Registered Air Mail envelope addressed to China bearing 'North Eastern Provinces' SG 25, $3 brown and SG 30, $50 violet (strip of three) tied by Shenyang date stamp with registered (0530) label and hand-stamped 'Air Mail' in violet, applied in Mukden in transit.
The Japanese hand-stamp indicates 'Air Mail' and was applied during the Japanese Occupation of Manchuria. The mark is not listed by Ian McQueen.