Estimate: $150 - $300
A WWII military Waltham Co. 24 hour eight-day clock, the black metal casing enclosing the black dial with 24 hour and date markings, the dial marked '8-Days Civil Date AU. Aero U.S. Navy Waltham', the reverse with further details, front wind knob beside 'Date Set', depress button. Dial 78mm.