American gold double dialed lever chronograph Circa 1878

Hunting cased keyess lever chronograph by American Watch Company
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A rare American 18 carat gold hunting cased double dialed keyless lever chronograph pocket watch, circa 1878. 3/4 Plate nickel finished jewelled lever movement, bimetallic compensation balance, glazed dust cover. White enamel dial with Arabic numerals, outer calibrated black minute track, red Arabic five minute divisions, eccentric subsidiary seconds and gilt hand, the reverse silvered matte outer fifth seconds ring. Polished case, box hinge, monogrammed front cover, chronograph button in the band, second button in the band to open back cover, reeded motif to the rim of the front and back covers. Case numbered and stamped A.W. Co., movement signed and numbered, movement further engraved H. A. Lugrin’s Pat. June 13, Oct. 3, 76 Patd. In England July 28, 1877.
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Diameter: 53 mm
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Signed: American Watch Company Waltham Ma.