50.00 mm case diameter, white double-sunk dial signed ILLINOIS BUNN SPECIAL, Arabic numerals, blued steel spade hands, subdial for seconds at 6 o'clock, polished bezel, polished case back, stem wound and lever set 23 jewel nickel 3/4 plate movement adjusted to temperature, isochronism and six positions with a gold center wheel, double roller, red inlay and ray engraved pattern signed SIXTY HOUR Bunn Special.
Movement number: 5390189.
Inner case back stamp: ILLINOIS Bunn Special CASE MODEL #28 KEYSTONE WATCHCASE JBOSS 10K GOLDFILLED 9760606.