PL.152 (QL) INVERTED WATERMARK ON COVER (SG8Wi CAT £350 OFF COVER). 1853 envelope Bath to Henley in Arden, Warks with a fine 1d pl.152 lettered QL with INVERTED WATERMARK (SG8Wi) tied '53' numeral of Bath. On reverse BATH date stamp JU 15 1853 and on front manuscript 'Missent to Henley'. Very unusual. RPS Cert 223615. (Ref 97267).