cover 1836 (13 Jan.) entire letter to the Treasurer of the London Missionary Society showing, on reverse, a light strike of circular intaglio "PRINCE OF WALES ISLAND/POST OFFICE" in red (Type P4) with manuscript date inserted, partly overstruck by framed "DOVER/INDIA LETTER", and red arrival c.d.s. (1.8); horizontal filing crease with light ageing on bottom half. The latest recorded date of use. Photo