Circa 1880, Waltham, MA
Dial: Front: time only, white enamel with black Arabic numerals, outer minute track with red Arabic markers every five minutes, sunken sub-seconds at 9 o'clock, blued steel spade hands, signed: American Watch Co.; Back: chronograph, circular white enameled open-center chronograph ring, calibrated with fifth second divisions within each second index, outermost Arabic numeral markers every five seconds, blued steel spade hands
Movement: 16 jewel, #1378512, size 14, stem-wind and lever-set, nickel finish, 3/4 plate, damascened design, jeweled gold chatons, straight line lever escapement, cut bimetallic compensation balance, blued steel flat balance spring, engraved gold pallet fork bridge, safety pinion, movement engraved: Am Watch Co. Waltham Mass 1378512 H A Lugrins Pat. June 13. Oct. 3. 1876 Pat.d in England July 28. 1877
Case: 18K yellow gold open-face case by A.W Co., #34829, smooth polished, chronograph push button, hinged glazed front bezel and solid back, gold glazed cuvette for chronograph function, signed and hallmarked
53mm Dia.
138 grams gross

Overall good condition. Winds, sets and runs. Functioning chronometer function. Dial: Front: Very good overall condition. Back Chronograph Dial: Good condition. Several hairline cracks. Movement: Very good condition, mostly obstructed. Some surface abrasion. Case: Very good condition. Light suface scratches.