Late 19th/early 20th century Swiss silver cased open face cylinder watch, the frosted three-quarter plate movement with mono-metallic balance and cylinder escapement to a Roman enamel dial with outside minute track, sunk subsidiary seconds and blued steel spade hands in a hinged case with engine turned back cover centred with a vacant and gartered cartouche and polished band with Swiss duty marks, 0935, 48904, width 51mm