This is the information I was given on the Deluxe models: John Loughner developed and made these for John Foskett. While officially unauthorized by Tom Jensen Jr., They were offered only through Jensen via John Foskett, the then sales manager/general manager of Jensen Steam engines. Also featured on these engines is a ball-bearing Jensen 15 generator/lamp post.
Maybe
@SteamerJ (John Loughner) can share some info?