Please see pictures for the absolute best description! As you can see at one point and time someone has converted this magneto from gear drive to a “trip” mechanism. With the mag sitting on my bench and giving it a trip and holding the plug wire to the edge of my bench it does give off a nice little blue spark. I do know though this shouldn’t take much work if any to bring it back up to the condition it left the factory in almost 100 years ago now. Mounting holes are solid. Very unique heavy duty built mag! I removed the points cover to show how clean and nice the inside looks. Antique Bosch Type 1 Magneto Motorcycle Indian 1 Cylinder Hit Miss Engine.