Incredibly rare movement, only 3,500 made in 1884 making it highly collectable, even more so in a 14ct gold case. Working and was tested over a 16 hour period and lost between 30 seconds to 1 minute. It will need a service or repair to keep perfect time. The stunning decorative 14k gold case is 43mm in diameter & weighs approx 68.8. 1884 Illinois, Grade 152, Model 2, 11J, 8S, lever set, stem wind with date serial number 525456. Very nice dial.