AN EARLY 20TH CENTURY SAPPHIRE AND DIAMOND OPEN FACE LAPEL WATCH, BY TIFFANY & CO., CIRCA 1910 Jewelled keyless manual wind movement, cream dial with gilt Arabic numerals and dot minute track, fancy hour and minute hands, plastic crystal, gold case, hinged case back, the reverse with foliate detailing centring a fancy-cut sapphire within collet-setting, accented with old single-cut diamonds and circular-cut sapphires, suspending from a similarly-cut diamond surmount, dial, movement and signed Tiffany & Co., mounted in silver and gold, length 4.5cm, case width 1.8cm