I have a fully automatic antique mechanical watch, which is in good condition and accurate. I don't know what year and model it is.

After carefully checking the information, I read the introduction of your watch. According to the information, your watch is Ogival F-306, which was produced by the Luxembourg watch giant Hamga family at the end of 18 century. The current price is equivalent to about 97,000 yuan.

17 gem indicates that this watch has 17 gem axes. ROTAREX group is a private company, established in 1922, which mainly develops and produces almost all kinds of high-pressure rare gas fine valves, and the products are applied to a part called "retty" in Luxembourg watch industry. Anti-magnetism means that your watch will not deviate because of the influence of geomagnetic field, and it can be accurately applied to places with strong magnetic field. FISK was originally meant to be the treasury of the Roman emperor's royal family, and it was used here to illustrate the noble status of manufacturers. The patent of S.A. BIDYNATOR shows that the product has been patented, and it is not allowed to be copied. Offenders will bear legal responsibilities. F 690 stands for the 690th movement of F production unit. I hope my answer is helpful to you. . .