Denarius

Obverse

Obverse legend

Reverse legend

Reverse

CARLM (lthe letters C, A, R, L and M under a tilde).

Rx F (the letters R, x and F under a tilde, one globule under the tilde, between the letters R and x, another globule in the middle).

Photo of a coin sold by cgb.fr, link to the sale and their website: https://www.cgb.fr/carloman-ier-denier-ttb-,bca_349344,a.html.

The globule in the middle seems to be present.

Another copy preserved at the Münzkabinett der Staatlichen Museen of Berlin, link to the page of their website showing the photo of the coin: http://www.smb-digital.de/eMuseumPlus?service=ExternalInterface&module=collection&objectId=2355188&viewType=detailView.