Antique Rusty Wrench Restoration

I got this old, rusty adjustable wrench from my father in law. He was using as it was and had no problem that it was rusted and had no handle. It's probably more than 100 years old. First I removed the loose rust using water and then vinegar and then the makers mark became visible. Goldenberg, an old German tool company, I think. After rust removing and polishing, I made a handle for it from some random wood on the lathe.