3007. Jules Jurgensen, Copenhagen. A fine 18K gold open face quarter repeating key wind pocket watch Jules Jurgensen, Copenhagen. Fine 18K (750) yellow gold open face quarter repeating wind pocket watch Date: Circa 1850 Movement: Gilt full plate, 3-arm balance, cut and compensated balance bridge, sprung detent escapement, No.6438 Dial: White, black Roman numeral hour markers, black outer minute divisions, blued steel Breguet style hands, subsidiary dial at 6 for running seconds Case: Hinged round, exhibition inner cap, cartouche to back, No.10056 Signed: Case, dial & movement Size: 52mm Weight: 99,71g Accompaniments: Winding key