Piaget Ref 13601 A6 an 18ct white gold bracelet watch with date circa 1985. Dial: bark-finished silver with applied white gold baton indexes, date aperture at 3 calibre: cal. 12PC automatic, 30 jewels, 24ct gold micro rotor. movement number: 645190. Case: polished round, textured bezel, snap on back. Case number: 102668. Closure: integrated 18ct white gold bark finished bracelet and clasp. Dimensions: 1.26 in. diameter, overall length approximately 7.32 in. Signed: case, dial and movement. Accessories: service receipt dated 29 May 2008..
- 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.
- Movement - The technical name for the workings of a clock or watch, and does not include the dial or case.
- Date Aperture - A date aperture is a cut out section in the face of a watch or clock, displaying the day of the month.
- Baton Numerals - A watch that instead of displaying numerals on the face, displays a marker in the form of a baton, or lower case letter "L". Since the baton-like marks are not numerals, the feature is also called baton markers, baton indexes and baton indicators.
- Bezel - On a clock or watch, the bezel is the metal frame into which the watch or clock glass is fitted. In clocks, the bezel may include a hinge and a flange, in effect a door to the face of the clock. In jewellery the bezel is a band of metal with a projecting lip that holds the gemstone in its setting.
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