George III silver consular cased half hunter pocket watch, fusee verge movement, numbered 20216. 2.05 in. case hallmarked London 1819, by William Linsley, case maker, Banner Street, Bunhill Row, London. White enamel dial with inner chapter of Roman numerals and minute indices, outer chapter of Arabic hours and minute indices. Key winding hole at IIII. Faint hairline in first quarter. old hands.
- Hunter - A hunter pocket watch is the type where the case includes a spring-hinged circular metal lid or cover, that closes over the glass face of the watch, protecting it from dust, scratches and other damage or debris. The majority of antique and vintage hunter-case watches have the lid-hinges at the 9 o’clock position, suiting the right handed user.
- Half Hunter - A half-hunter (or "demi hunter") pocket watch is one in which the outer lid over the face of the watch has a cut out centre section, enabling the owner to view the hands to tell the time, without having to open the lid. On some half-hunter watches, the hours are marked on the outer lid.
- Movement - The technical name for the workings of a clock or watch, and does not include the dial or case.
- George Iii - George III (1738 - 1820) was King of Great Britain and Ireland from 1760 to 1820.
- 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Use of the fusee in clocks was superseded by the "going barrel" in the mid 19th century and for pocket watches at the beginning of the 19th century.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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