1D RED PL. 9(SG7)(PD) ON COVER BRISTOL TO TENBY/GUNPOWDER. Fine letter Bristol to 'Mr Wm. Lock Tenby' 1d red plate 9 (SG7) lettered PD with four very close/just clear to good margins tied black M.C. of Bristol. Stamp clearly shows the "O" flaw, and on reverse BRISTOL date stamp MY 30 1841. Within is fine printed letter headed 'HOUNSLOW GUNPOWDER OFFICE, 16 CASTLE GREEN. BRISTOL'. (Ref 86743).