I've seen this on quite a few different coins, and keep wondering if it is just time damage or if it's a matter of polished die. I can not tell...
I got this national bank note, and it has this strange damage on it? At first glance it looks like burns, but I belive it may be chemical damage...
I've had this for a bit, have never had a real answer yet to what it is. [ATTACH] [ATTACH]
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