Kienzle mantle clock with 606c automatic movement

Other than the fact that I was given this clock by a friend due to my liking for mechanical clocks unfortunately I don't know much about it, It was not working when I got it but a very minor repairs it works fine and keeps very good time, the working is a kernzel 606c electro magnetic auto winder it drops a weight to drive the clock when the weight reaches the bottom it connects the battery and a magnet rewinds the weight to the top restarting the entire process it takes approx 90 sec to do this, other than that I know nothing about its value age etc hopefully someone could help me in some way hope you like it