This issue is quite common in mid circulated condition as is your example and worth roughly what you paid. I would not consider sending one in to be graded unless it was upper AU (AU58)at least. '86-O is a real conditional rarity in mid MS grades and should be graded (accurately)
And congrats on purchasing a nice circulated example!

edit to add - I see you posted this in the variety/ error category. Were you thinking something is amiss?
Edited by dave700x
08/05/2018 11:55 am