Turquoise Set Gold English Cylinder

An early 19^th Century English cylinder in a turquoise set gold open face case.  Full plate gilt keywind fusee movement.  Plain cock with large diamond endstone, polished steel Bosley regulator.  Plain flat three arm gilt balance with blue steel spiral hairspring. Polished steel cylinder, large brass escape wheel, pivots with endstones. Gold matted dial with applied gold Roman numerals, gold hands.  Drum shaped gold engine turned 18 carat open face case, the turquoise set bezels with applied gold decoration.  Engine turned middle and back, gold bow with applied gold decoration.   Maker's mark "LC" below a scroll, number corresponding to that on the movement.