cover 1d. letter sheet, A19, addressed to Bracknell, good strike of the red Cross, the reverse with very fine blue "DORKING" double-arc datestamp for 10 May 1840 (first Sunday), partly overstruck by red London transit c.d.s. for 11 May; traces of light overall toning and a few minor perimeter faults but still a most attractive example of this rare usage. Photo