, showing fine strikes of the "F.P.O. NO 4/8 AU/00" single ring d.s (Tientsin) and "BASE OFFICE" single ring d.s (20/8) (Proud D2) struck at Hong Kong, also showing Indian and British tax h.s. A rare and very early Boxer rebellion cover posted before stamps became available. Photo" /> cover 1900 (8 Aug.) stampless envelope (vertical crease and slight damage at foot) to Plymouth with notation<I> "Active Service No stamps available G. Mullins Capt. RML's(?)"</I>, showing fine strikes of the "F.P.O. N<V>O 4/8 AU/00" single ring d.s (Tientsin) and "BASE OFFICE" single ring d.s (20/8) (Proud D2) struck at Hong Kong, also showing Indian and British tax h.s. A rare and very early Boxer rebellion cover posted before stamps became available. Photo | Christie's