Rare quartz watch with tuning fork drived movement, made in USA 1974. Only ever produced quartz controlled tuning fork movement.
Case back says 20 microns gold plated bezel, and KB7411-1 swiss. Probably the case parts, maybe assembly too, are made in switzerland, while the movement is made in USA. Presented by Rauma city at 1975.
![](https://i.ytimg.com/vi/vLdx035oww4/maxresdefault.jpg)