Okay folks, I now have enough time to work on the Bill and Allan's Mudcat Adventure Guitar. I am probably only going to refinish the face and the back which have the signatures of all of the Mudcatters we encountered on our trek. Before the signatures were put on, I sanded down to bare wood. The signatures were done using an indelible "Sharpie" marker.

My question is: What is the best way to put an adequate finish on it?