19th Century 18ct Gold Chronograph Pocket Watch
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A 19th century 18ct gold open face centre seconds chronograph pocket watch, the key wind movement with hack seconds, cream enamel dial with Roman numerals, railtrack minutes and 300 outer scale, dial and back plate marked 'Centre Seconds Chronograph', matched case, dial and serial numbers 52059. 1869 hallmarked case and 18ct cuvette by John Rotherham (Rotherham & Sons), watch & watch case manufacturers, Spon Street, Coventry., diameter 5.5 cm. Total 139gm
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- Back Plate - On many types of clocks, the movement operates between two plates, usually made of brass, one at the back, and the other at the front, which forms a mount for the dial.
On English bracket, mantle and table clocks the backplate was often visible through a glass door or panel from the late 17th century, and could be profusely engraved with scrolling decorations, flowers, foliage, birds, and figures. The engraving could also include the maker?s name.
The amount of engraving reduced and became simpler as the 18th century progressed, and by 1800, had been reduced to a border, often with the maker's name in the centre. By the early 1800s all decoration had ceased, and only the maker's name was added, and by the Victorian era, most bracket, mantle and table clocks had no engraving. - Chronograph - A chronograph is a watch that also incorporates the features of a stopwatch, to measure elapsed time. Most chronographs are operated by two buttons, one to start and stop the chronograph second hand, and the other to return that hand to the starting position.
- Movement - The technical name for the workings of a clock or watch, and does not include the dial or case.
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