1880 O Morgan Dollar With Chop Marks?

I find the markings very suspicious...particularly the mint mark.
What I know of in the 1800's are:

1880 80/79
1880-CC
1880-CC 8/High 7
1880-CC 8/Low 7
1880/79-CC Reverse of 1878
1880-CC 8/7 Reverse of 78
1880-O
1880-O 80/79
1880-S
1880/79-S 80/79
1880/9-S overdate

The mint mark shown on that coin looks like a "V" and it wouldnt suprise me if that was a hand-hammered damage job to that coin, sad to say. If you do some comparing, the "3's" on the coin are not of of the 19th century style on the Morgans in that decade.

I see no reason to believe the coin itself isn't genuine. The stamped marks were undoubtedly done by some idle American during the coin's lifetime; true chop marks used Chinese characters, not Western numbers.