(British Post Office) 1880 (AU 25) opened-out envelope to Havre franked Great Britain 1870 1½d. and 1880 1d Venetian Red vertical strips of 6 and 3 plus a single, two stamps missing from the front top right (would originally have been a block of 12), cancelled by C59 obliterators, fine red JACMEL PAID, Calais entry cds at left, reverse with London transit and arrival cds. Envelope opened out for display, a most unusual franking.