No. B134983, Brotherhood of Locomotive Firemen Official Standard
17-jewel 16-size concentric damascened divided ¾ plate adjusted movement, signed "Ball & Co., Cleveland, O.", gilt BLF medallion, gold center wheel, jewels in gold settings, bimetallic balance, overcoiled spring, micrometer regulator, lever set, white enamel dial signed "BLF Standard, Ball & Co., Cleveland", arabic chapters, subsidiary seconds, blued Breguet hands, screw back open face case with glazed back
52mm