Hello everyone, I could use a little help here. I acquired a VARIAC adjustable transformer 100-Q. The thing is I have no knowledge of these or application. It looks to be in great shape, but is missing the outer plates which is exposing the core. I plan on selling it but have had no luck in my digging around. Any information would be helpful including worth of the item in it's current state. I have not tested it so I am unsure if it works. Thanks!