WIP: Restoring an old bone handled Scout knife (to clean or not to clean?)

NEW GEC #72 Cody Scout Burnt Sienna Bone Great Eastern Cutlery Tidioute 721123LB

BLADE Magazine

Beautiful Old Challenge Cutlery company Scout Knife in amazing condition with super bone handles. 1910 Connecticut made

Restoring Vintage USA Made Camp Knives: Repairing the Camillus Boy Scout Knife with New Pin

Hunter Kit

Heritage Schrade + NY USA Brown Bone Everlastingly Sharp 2941 Trapper Knife c.1983

Weapon handle hi-res stock photography and images - Page 9 - Alamy

Cleaning & Protecting Blades & Knife Handles for Valuable & Antique Knives - The Cutting Edge

How can I go about restoring this knife? It's my uncle's old Boy scout knife, and holds some sentimental value. : r/knifemaking