A. L. Breguet Medaillon Antique Pocket Watch from 1810s

Rare and beautiful medallion pocket watch made in Abraham Lois Breguet workshop.
Diameter is 26mm, weight is 14 grams.
France, c. 1820s.

This "montre medaillon" watch is among the smallest ones made by A. L. Breguet.
The watch is nice example of sophisticated non-complicated small watches of company.

Particularities of Breguet production
Being small, the movement doesn't compromise to the quality - it's equipped with Breguet ruby cylinder escapement and parachute antishock.
Balance wheel is made of solid gold.
Gilt brass barrel with "arbre percé" (square opening for winding), for inverted Breguet key.

Golden dial bears secret Breguet signature and serial number 52.
Dial also features visible Fast/Slow regulator.
Back cover is hallmarked with B 52, case equally bears French hallmarks for 18k gold.
Case lacks dust cover to keep the watch as thin as possible.

Condition
Watch appears to be in good condition.
The movement functions, though timekeeping wasn't tested.
Case is in good condition with common period wear.
Dial is in good condition, with traces of original Breguet hands.