1948 Nov. 30 Shanghai domestic airmail cover franked with Scott 857 (x5), 861 (x4) to Canton, Guangdong, 12/3/1948 receiving mark on reverse (mistaken use of international airmail rate for domestic airmail)

1948 Nov. 30 Shanghai domestic airmail cover franked with Scott 857 (x5), 861 (x4) to Canton, Guangdong, 12/3/1948 receiving mark on reverse (mistaken use of international airmail rate for domestic airmail)