Except for file marks on the edge visible from
obverse and
reverse, which are obvious (I mean really, who would do that and think it wouldn’t be seen), I can't see
signs of casting. As a last resort, I sometimes strip
LRBs I’ve tried to clean and then darken them, usually with liver of sulfur, but I have experimented with Jax. The stripping often exposes
pitting. And sometimes the treatment doesn’t take and leaves bright spots. But for the file marks, I might say this is a stripped coin treated with Jax green that didn’t take well, and then treated for an extended period with liver of sulfur leaving the cakey black surface especially on the
reverse, and with a few spots where neither treatment took leaving the bright spots.