Divo Claudio Ae4

Here's one from the 'TIF's Folly' lot that I spent a ridiculous amount of time on.

I think I have it now although I can't quite make the reverse legend match.

My first mistake was in thinking it was a laureate head-- apparently it's veiled. Second mistake was trying to exam it bare-eyed, with hand-held magnification, and with a USB cam (bad resolution). Once I photographed it things were easier.

Might be worth letting this one soak in oil for a long time. Or if anyone has suggestions for very gently encouraging the encrustations to go away, let me know. It's a pleasant enough coin.

ERIC is sometimes helpful when I'm looking for these Romans, but apparently it doesn't list AE4s. Huh. There's one of these in wildwinds though and I've put it below my coin.



Claudius II Gothicus
268-270 AD
Posthumous issue, 317-318 (?)
AE4, 16 mm, 2.2 gm
Obv: DIVO CLAVDIO OPT IMP (or OPTIMA, not sure); veiled bust right
Rev: MEMORIAE AETERNAE; eagle standing right with head left, wings open
Mint: Rome? should have R_ (P, S, T, Q) in exergue; can't see the MM
Ref: RIC VII Rome, 112?

Similar coin from wildwinds:





I am skeptical of the 'very rare' label as often those types of comments, when found in old references, are not accurate.

Comments welcome.
- Do I have the correct attribution?
- Is the reverse legend MEMORIAE AETERNAE or something else?
- Should I try to remove the encrustation? If so, how?