50.00 mm case diameter, white single-sunk dial signed BALL, Arabic numerals, blued steel spade hands, subdial for seconds at 6 o'clock, polished bezel and case back, stem wound and lever set 23 jewel nickel bridge plate movement with five adjustments and damskeen finish signed Ball Watch Co Official Standard.
Movement number: B648963
Inner case stamp: BALL OFFICIAL RR STANDARD KEYSTONE WATCH CASE JBOSS 9619292.