aboard Jennifer! The nickel you have is dated 2000 with the P mintmark for Philadelphia. This nickel seems to have suffered some sort of environmental damage to get it this weird color, so this is what we call post mint damage, or PMD.
@jenn, first welcome to CCF. Second, the surface staining is a bit distracting, but I agree that the reason for the missing number 2 in the date is most likely due to this coin being struck from a grease-filled die. That is a fun find.
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