Tiffany & Co. 5-Minute Repeater Split Second Chronograph with 60 Minute Register Vintage 18k Yellow Gold Pocket Watch - Manual winding; 5-minute repeater; chronograph with 60 minute register. Open face 18k yellow gold case (50mm diameter). White enamel dial with black Breguet numerals and red numerals, marking the seconds, around the outer edge. Case, dial and movement signed. Case and movement numbers, 78233, match. Pre-owned, ca. 1900-1910. This very rare and collectible pocket watch is triple signed, with minute repeater, split second chronograph with 60 minute register.