I dug up Bo, Arthur, and Connie's old halters from 20 years ago. I hang Connie's and Bo's in my room as they've passed away, but I would love to use Arthur's at the fair this summer. They're leather, and they're engraved on brass plates. The brass has started to wear or rust or something so that the edges are brown. Is this permenant and unfixable, or can I fix it? Thanks,
EQ
EQ