Aubert & Klaftenberger, London: An 18ct gold open-face keyless minute repeating pocket watch, the reverse engraved with a coat of arms...., the engine turned dial with Roman numerals, off-set subsidiary seconds, floral motif to the centre, the signed frosted gilt ¾-plate movement with Nicole Nielsen winding, bimetallic balance and duplex escapement, repeating on two gongs operated by a slide in the band, hallmarked London 1860