O 6" (7/11) single-ring arrival c.d.s. The only example we have seen of a Chinese railway handstamp used to cancel a C.E.F. letter. Photo " /> cover 1904 (Nov.) ½a. stationery envelope to Shanhaikwan tied by tombstone "Peking - Shanhaikwan" T.P.O. handstamp, on reverse "F.P.O. N<V>O 6" (7/11) single-ring arrival c.d.s. The only example we have seen of a Chinese railway handstamp used to cancel a C.E.F. letter. Photo | Christie's