Giannini GN-65 1950's Brazilian Super Clean, Low Serial Number

This is a super clean 1950's Giannini GN-65 in excellent condition serial # 351 with TKL Style HSC. This has Gibson style open book headstock and brass frets. I have owned this guitar for 15 years and the only thing I have done other than change strings is put a K and K pure mini pickup in it. The pickup is fully passive and does not hinder the acoustic performance of this guitar. Guitar plays and sounds great and I hate to sell it but bills won't pay themselves, plus I already have a Ramirez that I play alot more. No finish cracks, but there are two spots down by output jack that have been there since I bought it, neither of these spots have broken the finish. Top, back and sides are bookmatched. It is hard to say but I think Nut has been replaced before I bought it. Saddle does have grooves started in it, so replacement or polishing probably recommended. There is also some discoloration around the neck to body joint, in fact it looks more like polishing compound but it isn't. Pretty sure neck hasn't been off since I don't see any other tell tale signs on the guitar, but again I have had the guitar for 15 years and don't know prior history. I'll answer any questions as quickly as possible.