Self Winding Clock Co. master clock for Panama canal locks

Self Winding Clock Co., New York, electromechanical master clock in an oak case with an electrically wound movement with dead beat escapement and regulated by a two vial mercury pendulum, arabic numeral silvered metal dial, spade hands, serial #201304 together with a Self Winding made secondary unit for sending electrical signals at a designated time to circuits for opening and closing Panama canal locks

58 x 20 x 7.5 in
Condition Report: case in excellent condition; dial in excellent condition; broken suspensionn on pendulum, ACCESSORIES: Mercury pendulum, Secondary Switching Unit, circa 1930