Has anyone a description or, better, a picture of a:
Senechalle counter or
A star-wheel counter?
These have been mentioned in historical documents but I've never seen one.
In the late 1940's I had a bike odometer counter which used a five-pointed star wheel on its shaft. Each time the spoke-mounted pin hit the star wheel, the counter would rotate 1/5 revolution. I don't remember what the display did in response to this.