cover 1893 (28 Feb.) envelope (crease at foot) registered from Constantinople to London and redirected to St Leonards on Sea, bearing 1893 (25 Feb.) "40 PARAS" on ½d. vermilion cancelled at Stamboul and 1887 80pa. on 5d. cancelled with "R" in oval h.s.; an attractive franking. B.P.A. Certificate (1967). S.G. 7. Photo