ϒ A Victorian brass bound rosewood two-day marine chronometer Parkinson and Frodsham, London, circa 1880 The four pillar full-plate single chain fusee movement with spotted plates, Harrison's maintaining power and Earnshaw type spring detent escapement regulated by split bimetallic balance with circular timing weights and helical balance spring with faceted diamond endstone, the 4 inch circular silvered Roman numeral dial with blued steel hands, subsidiary seconds incorporating serial number 4184, power reserve dial, and inscribed PARKINSON & FRODSHAM, ROYAL EXCHANGE, LONDON to centre, set in a lacquered brass bowl with screw-down bezel mounted within pivoted gimbals with locking screw, the rosewood three-tier case with brass shield nameplate within double-line borders and brass bound edges to top over conforming front with push-button clasp for the top tier above applied ivory panel inscribed PARKINSON & FRODSHAM,4184, LONDON to the middle tier and with inset brass key escutcheon, the sides with recessed brass carrying handles and conforming brass bound edges, 18.5cm (7.25ins) wide. William Parkinson and William James Frodsham founded the highly regarded firm of Parkinson & Frodsham in 1801 at 4 Change Alley, Cornhill, London. William Parkinson died in 1842 and William Frodsham in 1850. Initially the firm specialised in marine and pocket chronometers. It had an extensive export business, and supplied the Admiralty and numerous shipping companies. After the founders' deaths the business was continued by Frodsham's elder sons and grandson until 1912, when the name and business were sold to the foreman, William Harris. Harris and his son Geoffrey ran the business successfully until 1944 when the firm's premises in Budge Row were bombed. ϒ indicates that this lot may be subject to CITES regulations when exported. Please see our Terms & Conditions for more information.