Klaftenberger, London No.10706: An 18ct. gold openface keyless minute repeating pocketwatch in plain case with engraved monogram to the reverse, the white enamel dial with Roman numerals and subsidiary seconds, the signed frosted gilt three-quarter plate movement jewelled to the third with screwed chatons, the bi-metallic balance with lever escapement, repeating on two gongs operated by a slide in the band