No. 42093, Brotherhood of Locomotive Firemen Official Standard, in B L of F monogrammed case
17-jewel Grade 999 18-size, combined radial and concentric damascened full plate adjusted movement signed "Official BLF Standard, Ball & Co., Cleveland O.", jewels in settings, bimetallic balance, overcoiled spring, swan's neck regulator with index on balance cock, stem wound, lever set, white enamel dial signed "BLF Standard, Ball & Co. Cleveland, O." with black arabic numerals, subsidiary seconds, blued hands, gold filled Deuber open face case with applied rose gold BLF monogram
55mm