O 16" arrival c.d.s. (28/4)" /> cover 1901 (28 Apr.) C.E.F. ½a. stationery envelope (flap missing) to Chinwangtao cancelled by "BASE OFFICE/C/28 AP 01" bridge type c.d.s., in combination with B.R.A. 5c. (green surcharge) on ½a. tied by circular "RAILWAY POST OFFICE/SHANHAIKWAN" in violet and showing fine "F.P.O. N<V>O 16" arrival c.d.s. (28/4) | Christie's