This item has been sold, and the description, image and price ($US) are for reference purposes only.
A gold quarter repeater pocket watch, key wind and set, fusee duplex movement, circular cream dial with black Roman numerals, subsidiary seconds at six, dial signed Purvis London, 7338, 18ct gold engine turned case, diameter 1.79 in., in fitted Grohe, London box (see condition report).

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  • Engine Turned - Engine turning is a decorative technique used on metal surfaces to create intricate curving or geometric pattern. The process involves cutting a series of lines into the surface of the metal using a rose engine or decoration lathe which rotates the metal as it cuts, allowing the operator to create a repeating pattern that covers the entire surface. The resulting surface has a shimmering, reflective quality that is often described as "engine turned." Where an engine turned item has been enamelled, the term used to describe the decoration is usually guilloche.

    Engine turning was originally developed to decorate metal objects such as firearms, scientific instruments, and other metal objects that required precise and elegant design.
  • Movement - The technical name for the workings of a clock or watch, and does not include the dial or case.
  • Fusee - The fusee movement was used in clocks and pocket watches from the mid 17th century. The fusee is a cone shaped drum within the works that is linked to the barrel of the spring, usually by a length of chain.

    As the mainspring loses its tension over time, the cone shaped barrel compensates for this by increasing the tension, by pulling the mainspring tighter, thus ensuring the time remains constant.

    Use of the fusee in clocks was superseded by the "going barrel" in the mid 19th century and for pocket watches at the beginning of the 19th century.

    The fusee continued to be used in marine chronometers until the 1970s.

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A gold quarter repeater pocket watch, key wind and set, fusee…