Last quarter of 19th century silver cased open face American watch, Am Watch Co - Waltham, Mass, 6974803, the frosted gilt movement with bi-metallic cut compensated balance and blued steel overcoil hairspring to a signed Roman enamel dial with outside minute track, sunk subsidiary seconds and nickel spade hands in a hinged case with engine turned back cover centred with a vacant and gartered cartouche and coin milled band, Birmingham 1876, maker's mark AB, 382, width 56mm