A 19th Century English fusee lever with large chronometer balance in a silver open face case. Full plate gilt keywind fusee movement, Harrison's maintaining power. Plain cock, polished steel regulator, large chronometer type compensation balance with two circular weights and two timing screws, blue steel spiral hairspring. English table roller lever escapement, escape pivots with endstones. White enamel dial with subsidiary seconds, Roman numerals, blue steel seconds hand, gold Breguet hands. Plain silver open face case, maker's mark “TC”.