Hot water, WD40, 0000 steel wool, a rag, a toothpick, and some vinegar. Before and after. Granted the lighting is different but you can see the difference between before and after.
Before:
After:
I'll cleanup/sharpen the edges after the missing scale is replaced (part 3).
Before:
After:
I'll cleanup/sharpen the edges after the missing scale is replaced (part 3).