*S 406 S/36-9 *The S 406 S2/36 door and front panel were made of cast aluminum. Later models were

*S 406 S/36-9
*The S 406 S2/36 door and front panel were made of cast aluminum. Later models were made of sheet metal.

Photo by Bruce Culp
Photo by permission of Stg. C.D.V.&T.