A registered 40pa/2 1/2d envelope fr. with 1887 40pa/1 1/2d and a copy of "Express DOrient" label in dull salmon(Die 1),imperf., paying the postage and the additional fee for a letter sent by the Orient Express canc. "British P.O. Constantinople Jy 15.1895", arr. Frankfurt 18.7.95. Rare.