HELLO. My uncle recently passed away and I am trying to identify his Gibson. The gold colored part that holds the strings at the bottom of the guitar (Forgive me for my ignorance when it comes to guitar part names) says "ES -350-t". The serial number inside the F hole starts with a Y which I believe indicates 1953. So when I search that model and year I do not find the same looking guitar. Inside the guitar case was another one of those things that holds the strings that is silver colored with no engravings. I will attach pictures. Please HELP!!!! Thank you for your time.