As you say, the badge name makes it very difficult to research. I do recall a similar thread, but I couldn't find it. The last paragraph of the 1st post of this thread outlines image hosting strategies if you don't increase your post count to 10 posts to use MLP's image server. I really think posting a control cavity pic, along with other pics suggested in that 1st post, will improve your chances of eventually solving the guitar's provenance. Best of luck to you.