I am in the not a die crack group. It looks like a stain of some kind. Acetone does not remove everything. A die crack on both sides of a coin mirrored is most unlikely since two dies are being used and for both to crack the same way seems imposable.Not slab worthy but anacs is the least expensive and if you do send it in, please post a full slab photo when you receive it back.
John1
John1

( I'm no pro, it's just my humble opinion )
Searched 6.5 +/- Million Cents Since 1971
Searched 6.5 +/- Million Cents Since 1971