second half 19th century, with 4 pillar chain fusee movement, numbered 2351 to front movement plate and inside of cover, with diamond end stone, the 10cm silvered dial with Up/Down and seconds dials, Roman hours and Arabic 5 minutes, gimbal mounted in double hinged case18.5 x 17.5cmcase repolished; few scratches around securing screws; appears to tick. Not tested as to duration, presumably two day.With ivory declaration certificate no. G42PHHQS for small plate to the front of the case