
A few things when I got it a couple of months ago;
- extra string tree added later
- tuners had been replaced - not great
- frets were pretty much gone
- replacement copy bridge
Everything else original and looking good.
So I took it to a tech, replaced the tuners with something at least vintage appropriate, removed the extra string tree, refret (level and shim were good).
String tree fix -
Before

After

Tuner replace -
Before

After

Refret -
Before

After

Still wondering what to do with the bridge or whether to bother. It looks okay - not original or totally right but will probably leave it as it's close.
I've tried to put the mods back to near-original. What happens is the left-over holes, tuner peg ring marks etc become more visible. No getting around that. The hole-filling isn't perfect and may need a little more work. I still prefer it to leaving it as I got it.