American Watch Co., No. 999966, signed on case and movement, "Woerd's Patent Compensating Balance"
21-jewel M1872 16-size elaborately damascened nickel ¾ plate adjusted movement, jewels in gold settings, lever set, gold train and escape wheel, counterpoised escapement, Woerd's "sawtooth" balance capped with gold dome, blued overcoiled spring, tadpole regulator, gold cuvette signed "Charles van der Woerd's Patent Compensating Balance", white enamel dial with three line signature, roman chapters, blued breguet hands, engine turned A. W. Co. case
52mm, 135.7 grams