A cased Tranter percussion revolver by John Blanch & Son

dating: about 1855 provenance: London, Octagonal, rifled, extended in the time of use, 9 mm cal. barrel, engraved at the base and with foresight; five-shot, smooth cylinder with marks of the London test bench, engraved at the borders. Frame marked (J. BLANCH & SON GRACECHURCH ST. LONDON'), engraved with floral motifs, serial no. '13xxxT' and marked like the magazine 'TRANTER'S PATENT'. Safety lock. Checkered, wooden grips. Engraved mounts. Kept in its wooden case lined with green cloth and with Blanch & SON label provided with various tools.The case modified for the longer barrel after the extension. With key. length 28.5 cm.