Ok so I just got this
Barber dime in a lot I won on
ebay. It is a 1905-O dime and the obverse has a small dent in it. What is interesting is that the O mintmark looks totally strange.
I had an existing 1905-O that I scanned which is on the right and my new coin is on the left. Don't the mintmarks look a bit different on the left hand coin?

Here is the obverse of both.
