Am'n Watch Co., No. 670478 16-jewel M1872 16-size nickel movement with concentric damascening, jewels in gold settings, lever set, counterpoised escapement, flat blued spring, plain index regulator, gold cuvette, signed double sunk white enamel dial with chapters spelling "ALFRED H. EDSON", subsidiary seconds, blued breguet hands, A. W. Co. case