A Restauration Gilt Bronze Month-Going Skeleton Timepiece by Breguet, Circa 1820

enamel dial with equation; subsidiary seconds dial rotating above the main dial; a skeltonised annual calendar dial above, the movement with tandem barrels; constant force escapement, grid iron pendulum with knife edge suspension; mounted with two engraved silvered plaques below the dial Echappement à force constante and N^o 123 Breguet à Paris

height 23 in.; width 10 3/4 in.; depth 6 1/2 in.

58.5 cm; 27.5 cm; 16.5 cm