No. B255029, Official RR Standard with an aluminum Ball cigarette case
21-Jewel 16-size concentric damascened divided ¾ plate adjusted movement, signed "Ball & Co., Cleveland, O.", gilt RR medallion, gold center wheel, jewels in gold settings, bimetallic balance, overcoiled spring, micrometer regulator, lever set, white enamel dial signed "Official RR Standard, Ball Watch Co., Cleveland", arabic chapters, subsidiary seconds, blued hands, engine turned screw back Ball Model Keystone 20-year open face case, accompanied by original packaging in the form of an aluminum cigarette case
51mm