A Gold Filled Open Face 'Sangamo Special' Pocket Watch, Illinois, Circa 1920, 49.00 mm case diameter, white single-sunk dial signed ILLINOIS, Arabic numerals, blued steel spade hands, subdial for seconds at 6 o'clock, stem wound and lever set 23 jewel nickel movement, with raised gold screw-set jewels, six adjustments including temperature and isochronism and a 48-hour motor signed SANGAMO SPECIAL ILLINOIS WATCH Co. Movement number: 3610386.Case number: 4750729. 53.10 dwts.