I found this video about how they build their guitars and they talk about the GJ guitars at about 6 minutes into the vid but it's in French so I don't know what they are saying.
Ok, I'll translate a bit. He says that the top is made of German spruce and that the varnish is going to be "repolished". This may suggest French polish, but that's just a guess.
Comments
1. Can a removable pick guard be used on this kind of finish? (I don't know the terminology. It may be called oil-finished).
2. If the wood surface already has some light scratches, can one still add the pick guard or will there just be a bunch of bubbles?
Thanks for your time.
Ok, I'll translate a bit. He says that the top is made of German spruce and that the varnish is going to be "repolished". This may suggest French polish, but that's just a guess.
Stewmac may also have some info on finishes and pickguards