ChinaManchukuo1946 (9 Mar.) Via U.S.A. first day airmail envelope (opened out for display)

China Manchukuo 1946 (9 Mar.) "Via U.S.A." first day airmail envelope (opened out for display) registered to Switzerland (30.3) bearing on front and reverse Harbin local overprint "Republic of China" on Manchukuo stamps (12), tied by "Harbin" Japanese type c.d.s. with bilingual "Shanghai" transit c.d.s. (22.3) on reverse, very fine. Photo