In the picture below you can see the Fairbanks Morse magneto.
Below shows the carb side. Priming cup sticking up on the left.
Overhead valves and rocker arms. I removed the push rods
so the wouldn't get damaged. The long vertical tube between the
engine and gas tank is the crank case breather/filler tube.
Below shows the flywheel and the makers name in raised letters in the
casting.