This belonged to my father. I remember him owning a Martin flat-top and a D'Angelico guitar when I was a child. I believe these parts are from those guitars, but they were stored together, and the guitar bodies themselves were nowhere to be found. Therefore, I'm not sure which bridge belongs to which guitar. These parts are surprisingly hard to find. I hope to pass them on to someone who can use them. In addition, I suspect my father carved the D'Angelico engraving in image 16 himself. It looks like it was done by an amateur... Please consider purchasing after understanding that these are used items and their condition. Thank you for looking.