Nice knife, the bone looks great. Did you use regular mineral oil?
What is the purpose of the oil bath? Is it for the bone?
Great knife by the way!
Over time, neglected bone scales will dry out and be more susceptible to issues such as shrinking, cracking etc. The mineral oil will help the bone resist such issues as well as restore its luster and looks.
It will also help lubricate, protect and reach difficult spots such as the inside of the backspring etc and check the onslaught of oxidation.