cover 6c. on 15c. with 2c. on 5c. and 1917 Peking local surcharge 6c. on 15c. and 1917-18 Pechino 1c. (6) and 2c. pair on front and back of 1918 registered censored envelope (opened out for display and part of back missing) to Italy (14.5), cancelled by R.R. POSTE ITALIANE/PECHINO-CINA" c.d.s. (16.3). Rare mixed office franking. Photo