Zenith a stainless steel chronograph wristwatch circa 1945, dial: silvered, Arabic numerals, subsidiary dials at 3 and 6, calibre: cal. 143 manual winding, 17 jewels, case: circular, snap on back, case numbers: 839021, outer 8669449, Closure : black leather strap, dimensions: 1.34 in. diameter, signed: case, dial and movement, accessories: Zenith presentation box.
- Movement - The technical name for the workings of a clock or watch, and does not include the dial or case.
- 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.
- 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.
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