Vacheron & Constantin an 18ct gold openfaced pocketwatch mvt 328962 case 199079 circa 1910, manual winding jewelled lever movement, gilt dial with engine turned centre, painted black Arabic numerals, blued steel Breguet hands, subsidiary seconds at 6, outer minute track, inscribed 18ct gold cuvette, monogrammed case back, case, dial and movement signed, diameter 1.77 in., accompanied by a two-tone gold watch chain, length 15.16 in.
- Circa - A Latin term meaning 'about', often used in the antique trade to give an approximate date for the piece, usually considered to be five years on either side of the circa year. Thus, circa 1900 means the piece was made about 1900, probably between 1895 and 1905. The expression is sometimes abbreviated to c.1900.
- 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.
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