French repeater with high-grade music movement Circa 1820

Gold open faced pocket watch by Berthoud
–
A French hours and quarters repeating Lepine pocket watch with high-grade music movement, circa 1820.
18 carat pink gold case, engine turned, coin rim, dome signed, peripheral small button for music movement, (in working order), dome with spring lid function, extravagant caliber, 2 barrels with extravagant winding construction. Cylinder escapement, repeating hours and quarters, music movement and striking train intact. Splendid 3-colored gold dial wit Roman hours and fine gold hands.
–
Diameter: 54 mm
–
Weight: 103 g
–
Signed: Berthoud