1881 MIDDLX/'YIEWSLEY' DATE STAMP/MOURNING ENVELOPE. 1881 mourning envelope with large black borders from YIEWSLEY to Kilburn with 1d Lilac 14 dots (SG170), one short perf tied "D96" 4VOS numeral of West Drayton. On reverse YIEWSLEY date stamp SP 22 81. (Ref 91754).