RK & CK - ON COVERS - 3 Mar. 1841 EL (filing crease away from stamp) to Halifax with RK having four margins, close at left, tied in black, BIRSTAL udc on the front, LEEDS on the top flap; also 25 Dec. 1840 E used in London on Christmas Day with CK tied in red, though stamp extensively repaired with two full and part of a third of the margins added. (2) Cross Reference: LONDON POSTAL HISTORY, YORKSHIRE (Image)