French 18K yellow gold miniature pendant watch Circa 1850

–
A fine French miniature 18K yellow gold pendant watch, circa 1850. A polished case with a hinged gold cuvette, and round bezel. White enamel dial with black painted Arabic numerals, outer minute division and gold Breguet hands. Frosted gilt movement, 12 jewels, cylinder lever escapement, three-arm gold balance, flat balance spring, and an index regulator.
–

Thickness: 5.5 mm
–
Diameter: 16.5 mm
–
Signed: No name
–
Some hairlines on the dial.