That 1986 is an off-centre strike. I saw a bunch of them recently, when I was rolling dimes up to take to the bank. Different dates, mostly late-90's.
just mis aligned die, if off center or broadstruck would be "off" center on bothesides, not just one, but, mis aligned dies can be 2 sided as well, you look at the rim, if no reeding, or missing, that is another sign of o/c or broadstrike, or out of collar strike as well , this one has normal reeding
my mother had an employee and he told me once anytime he saw a kennedy half dollar (back then they were silver) he would throw em on the ground and road rash them (he really hated kennedy)..said he worked in a gas station 64-66 and said he must have done it to hundreds... everybody hates a certain design or other,
I was speaking to all the corroded ones I find when metal detecting; quite a few. I mean, why waste 'em?
yes, this is called a mis-aligned die, an error but fairly common value of dimes probably 20 cents to a dollar depending on grade, if unc, of course more