Allen Walker. A gold key wind triple case pocket watch with repoussé and shagreen decoration London Hallmark for 1785Allen Walker. A gold key wind triple case pocket watch with repoussé and shagreen decorationDate: London Hallmark for 1785Movement: Gilt full plate fusee verge, pierced and engraved balance bridge, 3-arm balance, silver regulation, No.801Dial: White, black Roman numerals, black outer arcaded minute divisions with Arabic numeral 5 minute markers, gilt diamond set handsCase: Polished inner, numbered 801, pierced repoussé middle case possibly depicting Constantine and Saint Helena, outer studded shagreen case with exhibition glassSigned: Dial & movement, inner case stamped W.RSize: 54mm Accompaniments: Gilt metal chain, keyNone