Gallienus Zoo issue, Hippocamp right
Æ antoninianus; 21mm/3.2gm
Con/ Fine (after final cleaning)?
Obv/ GALLIENVS AVG; rad. bust r.
Rev/ NEPTVNO CONS AVG; hippocamp swimming right.
Seller's Note/ This coin is a real train-wreck, condition-wise (that's what I call truth in advertising) and not recommended for shoemakers. But, with judicious use of MSR soaks and hand-held, and maybe even a few special Dremel tools, you should be fine.