Rome VOT X ET XV F overstrike - over what ?

[Heliodromus]

I just saw this one mentioned on the numus-bibleii board .. recently sold by Athena. Weight 3.4g, no size given.

Can anyone identity the undertype ?

Seems to be something a bit larger from Rome mint - there appears to be an exergual RT mintmark, but I can't figure what the "ORMERIT" (?) legend fragment is from.

[Joshmaggosh]

The DIVO coins of Claudius, Constantius and Maximian had the reverse legend REQVIES OPTIMOR MERIT and had Rome mint issues.

[Heliodromus]

Ah yes! 

And of course Rome issued them in full nummus size.

[Victor]

That's an awesome coin, though I hate that it was sold by Athena. It shows that sometimes the Romans did overstrike older issues. I have a Crispus from London that looks to be an official overstrike also.