Sdan

Thank you for your reply and attention; on the Klusons I also had some doubts, and so I took them apart and on the headstock there are no other holes in any other position, for that I believe they are an initial supply. I think at Gibson in those days, and also for many years afterwards, they were not so careful to mind these things. (I have a ES 330 1966 electric in which the pickups are mounted seemingly without any attention to impedance, so that the PU bridge has much more power than the one at the bridge...) Translated with www.DeepL.com/Translator

FON is printed inside, but there is no serial number on the back of the headstock. My guess is that the neck has been replaced, for some reason and who knows when, but the fingerboard seems original; so the instrument does not seem to be completely correct. On the other hand it is obviously impossible to reconstruct everything that happened during the lifetime of such an old instrument which, at some point, arrived in a different continent. Translated with www.DeepL.com/Translator

So, absolutely different color than mine : the neck is black (or very dark) and the back is "mahogany reddish"

I'm sorry and thank you but I can't open this link

I bought this 1953 guitar that I paid perhaps a little too much for, but with which I am completely in love, because it has an incredible sound, it sounds almost overdriven-the typical instrument that you can never put down. It has some unusual features, though, like the color of the back and sides, a color that seems to be too light compared to the standard for acoustic Gibsons. Someone told me that it might be an instrument that some worker at Gibson might have requested or built exclusively for himself. My opinion, among others, is that the neck to me seems to have even been replaced, and probably the bridge as well. I wonder if any experts can give me any insight on this, and I thank everyone who can help me. Translated with www.DeepL.com/Translator (free version)