Hong Kong British Post Offices in China 1862 12c pale greenish blue CANCEL, SGZ3Hong Kong British Post Offices in China 1862 Hong Kong 12c pale greenish blue, no watermark, with complete strike of 'AMOY PAID' circular date stamp in red, dated 'AP 26 65(?)', lightly overstruck by 'B62' in blue, SGZ3. An attractive used example. Some short perforations and a minor thin spot, but still a fine quality used example of this scarce usage. but an attractive example of this scarce usage. Amoy was one of five original Treaty Ports opened