Wow,pretty obscure guitar.What condition is it in? Not much info available. Someone on the net says they were made from 1964-1967. Here's a picture for others to see.
Can't find any asking prices,but I found a couple of Magnatone Tornados,the two pickup version, for sale. Yours being the three pickup version would be worth more,but I couldn't say by how much.
Good score. Curious,how much did you pay for it?