J.B.19056, numbered silver cuvette, signed and numbered plain case, diameter 58mm. " /> A silver open faced keyless lever pocket watch, Glashutte/J.Assmann, circa 1910, white enamel dial signed <I>Glashutte, J.Assman,</I> Arabic numerals, subsidiary seconds, signed frosted gilt movement numbered 19056, jewelled to the third, "moustache" lever, compensation balance with micrometer adjustment to the regulator, front plate stamped <I>J.B.19056,</I> numbered silver cuvette, signed and numbered plain case, diameter 58mm. | Christie's