Thomas Porthouse Ship's Chronometer for Captain Davis of the Philena

Description:

Thomas Porthouse Ship's Chronometer for Captain Davis of the Philena, Charlestown, Massachusetts, and London, c. 1857, brass-bound case with maker's plaque reading "Thos. Porthouse/Chronometer Maker/No. 16 Northampton Square/London," circular boss reading "Francis Deming/Charlestown Mass/1857/United States," and a rare oval paper label reading "No. 7104/Bk Philena/Capt. Davis," engraved roman numeral silvered dial reading "Thomas Porthouse/Maker to the Admiralty/16 Northampton Square, London," up/down indicator with seconds bit marked in the center "7104," original lacquered gimbaled case with a two-day damascened plate chain fusee movement with helical hairspring, split bimetallic balance, and spring detent escapement.

Provenance: Purchased privately in the early 1970s by the current owner.
Estimate $3,000-4,000


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