Thanks again for sharing your work and your reporting, Gene Everett - @geneeverett. Minor rust or oxidation, really, doesn't hurt it. Colorful, rainbow colors, natural toning, can actually enhance its eye appeal and value. I don't know what happened to this 1-oz bar, but I love it. Still, 999, under the rainbow. Colors change with every angle.
If I lived near, NYC, I'd check out every Local Coin Shop.
RE: From 4/20/20! Those Were The Days! (Well sorta 🙃) & Where Gene Was Wrong! Some Throwbacks…..