A registered 2d blue envelope bearing an 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 Feb 8.1889", via London, 14. Feb and Toronto, arr. Forest Ontario. A scarce letter to a rare destination. Certificate Holcombe (1997).