Sax and Duke, it was a full funtional gasser. Not sure they made it to OZ. RR has it and has done extensive research on it. It was a preformer, that was put up against there first black box gassers. It lost. Not sure how many are out there. It went to a person that has collected longer than me, hopefully will be part of the museum he is trying to establish. The last communication we had, it was just a memory of old employee that remembered it, know drawings can be found...