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Index No. A8737 Small American Marine Chronometer
An early 20th Century American lever marine box chronometer with keep case.  Nickelled three quarter plate keyless movement with two going barrels for eight day operation.  Plain cock with polished steel micrometer regulator, compensation balance with blue steel overcoil hairspring.  Club foot lever escapement.  Signed silvered dial with subsidiaries for seconds and power reserve, Roman numerals, blue steel hands.  Turned brass bowl engraved US Navy No 175, screw brass bezel with flat glass.  Brass gimbals and locking mechanism, wound by a broad flat crown at 12 o'clock.  Three tier brass bound mahogany box, rectangular brass plate engraved "Waltham".  Outer mahogany keep case lined with green baize.  Accompanied by a US Navy Department Bureau of Ships record dated December 1943 showing the chronometer is losing 2 and 35/100 of a second each day.
SignedWaltham Watch Co  8 Days   15 Jewels Adjusted
Circa 1914
Diameter 75 mm
An interesting and rare survival of a record of the chronometer from the US Navy.  One of these Waltham chronometers is mentioned by Theodore Roosevelt as having been used in an expedition to Brazil.
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