This is a nice originalFairbanks MorseModel R rotaryhigh tension magneto for a hit and miss gas engine. It was used on the spark plug fired Model Z engines and possibly others. Itis in excellent condition withno cracks, breaks, or repairs of any kind. It mounts with two holes3 3/4inches apart on center. Everything turns over very nicely with very little wear in the bearings. This magneto put out a weak spark. It has the original leadout on it and it is in good condition. If you've been looking for onehere's your chance. With a little elbow grease it would be ready to go to work on an engine or would also be a good spare on theshelf. They don't come along very often in this conditionso don't miss it. The pictures tell the story. You'll like it. Good Luck.