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I know right? And I'm not sure why but there's a stacker named "Shadow Stack " that has an amazing collection of fives, tens and even kilo rounds! He just started here on steemit but he has a very cool YouTube channel that showcases his impressive collection.

I love his YT channel, such an impressive stack.

Indeed, he's probably my favorite precious metals porn channel. "Catch ya on the rebound!" :)

I think they have some numismatic value as well, because they are very collectable.