I have a strat with the word CAMAC written across the headstock. It looks to be custom-made sometime in the 70's. It's got an ebony board with mother of pearl inlays and a 5 piece mahogany/maple neck. Flame maple top on an ash(?) body with a black-red-yellow burst. It's a back-routed construction with a HB in the neck and two SC in the mid and bridge. It's got toggle switches for all the pickups and an extra switch which changes the highs. Serial no. 0138. I was wondering about the origin of this guitar and how much it would approximately be worth? Any other information would be good too.