A silver metal open faced double dialled keyless cylinder gambling pocket watch, Swiss, circa 1890, white enamel dial inscribed Patent Sport Watch, Roman numerals, subsidiary seconds, frosted gilt movement, the glazed back containing a spinning disc operated by a lever in the band, fixed pointer, the disc divided into segments numbered 1-10 and each with a picture of a named and dated race horse, all Derby winners between 1878 and 1887, diameter 47mm.

细节
A silver metal open faced double dialled keyless cylinder gambling pocket watch, Swiss, circa 1890, white enamel dial inscribed Patent Sport Watch, Roman numerals, subsidiary seconds, frosted gilt movement, the glazed back containing a spinning disc operated by a lever in the band, fixed pointer, the disc divided into segments numbered 1-10 and each with a picture of a named and dated race horse, all Derby winners between 1878 and 1887, diameter 47mm.