cover "CHINA" (Straight-line type of Tientsin): 1900 (17 Oct.) registered 2c. stationery envelope to Germany (6.12) via New York (21.11) bearing 1c., 2c. (2) and 8c., all have perf. faults or defects, cancelled by straight-line h.s. and showing "REGISTERED/Mil. Postal Sta. No.1, China" double-ringed d.s. in violet adjacent. Rare. Photo