Swiss brass watch with anchor chronometer Circa 1915

Watch with anchor chronometer escapement
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An extremely rare marine chronometer, made, to be sold by Spaulding in Chicago, by Patek Philippe in Geneva, Switzerland, circa 1915. This watch features a screwed brass case mounted in a wooden box with a gimbal suspension. The original silvered dial features an outer minute and hour track with Arabic hour numerals, a subsidiary seconds dial at 6 o’clock, blued steel spade hands for the hours and minutes, a baton hand for the seconds and is marked Chronometer. The numbered and patented (on January 13 1891) movement is adjusted and equipped with an extremely rare anchor chronometer movement, a special fine adjustment, a large Guillaume chronometer balance and wolf’s toothing.
The dial and movement are signed.
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Dimensions: 150 x 150 x 110 mm
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Signed: Patek, Philippe & Co Genève
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As with the Lange & Söhne “auxiliary chronometers”, Spaulding used a pocket chronometer movement for a marine chronometer, as there was a great need for marine chronometer movements during the war and supply problems arose. The original dial shows that the movement was intended for this use and was delivered to Spaulding in Chicago by Patek Philippe, presumably even with the original dial.