I have one I got an an auction over 15 yrs ago for $40 if I remember correctly :-) At the time I didn't really buy it to use it, so other than refurbishing the stand she has remained hidden until recently...I am currently waiting for a package to arrive from the lovely Charlee containing what will hopefully be the correct bobbin shuttle as she didn't have one.
The above info is all I have been able to find on them.
...since yours sounds like it is a working machine I may be "bothering you" in the future! LOL
Joann