ALBRO flywheels are aluminum. They were first manufactured by Paul Schiefer of the more famous Schiefer brand shortly after WWII. Most likely they are Ford flahead versions as that was his and the California interest at that time. Later he did produce GM versions.
Was told they are NOT Flathead cause of the larger center hole,and the 5th hole for lining up with the pin. It has 139 teeth
Sorry about the picture post
