NUMBER 4 LONDON NUMBERED CROSS COVER - Feb. 1844 EL (opening faults on the back only, spike hole away from the stamp) to Hartlepool with 1d red BJ plate 30, four mostly large margins (possibly just touched at one point) tied by No. 4 in MX, London & STOCKTON ds on the back. SG £2000. Cross Reference: LONDON POSTAL HISTORY, LONDON NUMBERS IN MALTESE CROSS CANCELLATIONS, DURHAM (Image)