I hope that the insertion of the photos has been done correctly.
This is a my friend's 12-9 (from the 80s, I think) that I would like to buy.
Unfortunately the father kept it in the sheat hanging on the wall, and the light darkened the micarta handle.
only part of the handle remained clear, as you can see.
I have two questions:
1) can the handle be returned to its original light color? how could this be done?
2) what value could this knife have?

Thanks in advance for the answers you can give me.
Andrea