The Manufacturing tag used on the pick up assembly in 1916-17 reads "The
Lionel Manufacturing Co" as compared to "The Lionel Corporation" used on
all later motors. The 1915 motors did not have an ID tag but the
rivets that hold the pick up had a small "L" embossed on the head. All
manufacturing motors have a triangular brush plate as compared to the
dogleg style on later motors. The 1925-27 corporation motors used on
the early electrics had a square style brush plate.