1850 1D PL.93 ARCHER EXPERIMENTAL PERFORATION (SG16b)(NF) USED ON 1850 MAIL LONDON TO WINDSOR CASTLE. Fine envelope London to 'Thos. Batchlor Esq, Lower Ward, Windsor Castle' with a good to fine 1d Archer experimental perforation plate 93 (SG16b) lettered NF, one shorter perforation at lower right. Stamp tied fine London Inland Office numeral, on reverse WINDSOR date stamp MR 5 1851. Fine usage on cover before the introduction of Official Perforation. (Ref 87612).
(NF)%20USED%20ON%201850%20MAIL%20LONDON%20TO%20WINDSOR%20CASTLE.){kind=link}
