12 - 13mm Roman coin

Hi There.

Can anyone help me identify this coin, This Roman Coin is only 12 - 13mm. In Diameter.
The Obverse, shows a helmeted man I think it’s Constantine facing left.

On the Reverse, is a She-Wolf suckling Romulus and Remus. There are two stars over the wolf. There is a line under the wolf.

Can anyone give any information on this coin, it has been suggested to me that this coin may be a 1/2 Centenionalis.

Constantine the Great, city commemorative. The mint mark should be under the wolf but I can't read it from the photo: https://en.numista.com/catalogue/pieces31093.html

cro321 Thank you 👍🏻