AU quite high end for the grade, most will say 58 I bet, but the only reason I'm calling it AU55 is the reverse staining. Things I really dig as a connoisseur of deuces on your coin are;
1. Date, it's not 1864 or 1865
2. Rim Cud on the reverse above A in America
3. Obverse partial railroad rim
I'd give her a rinse in acetone to see if it improves the stained areas, at worst it get's rid of harmful PVC lurking around the surfaces. Great original undamaged surfaces on this coin, it would be fine for either a date series collection or in a type coin collection.
"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013! ANA
Life Member #3288 in good standing since 1982, EAC Member #6202, NBS Member, 2¢ variety collector.
See my want page: http://goccf.com/t/140440