Here is an original Splitdorf Aero 4 cylinder magneto. It has a built-in impulse starter on one end. Very clean, and "hot" - it puts out a strong spark when turned. This magneto is in very nice condition. it was used by both automobiles and tractors. The impulse drive allowed easy starting by adjusting the impulse via a small switch on the housing. This magneto was a display piece in antique automobile restorer's estate, and has been stored indoors for countless years.  Very hard to find in working condition, bid to own this great find.