I inherited the a wooden game from my parents. Probably date from 1960-1975. No box, no instruction. Can you help me identify it and locate rules for it?

It's a 9.5" square with 4 indented concentric circles. The outer ring is divided into 12 sections, the next into 8 sections, the 3rd into 4 and the center - approx 1" diam. is not divided.White and black dots are in seemingly random sections. Inside the black leather pouch are 6 brown wooden marbles and two chrome cylinders. One cylinder has 3 raised concentric circles on one end, the other has 2 concentric circles, the innermost indented. "Skjode Skjern Danmark" is etched on the bottom.

[![Picture of the board](https://i.stack.imgur.com/tKoZC.jpg)](https://i.stack.imgur.com/tKoZC.jpg)