I bought a Les Paul copy guitar at the height of the lawsuit era in 1978 it was from the origianl owner. The headstock logo is Concert and it has a MOP butterfly inlay (very 1960s) it has a bit of electric hum but I'm preparing to refit the instrument with new tuners knobs pick ups wiring harness and I'm adding a Bowen whammy bar (no wood cutting needed) this was mfg'd in Japan and I'm trying to find out it's worth for insurance purposes.