Denarius (Aix-la-Chapelle?)

Obverse

Obverse legend

Reverse legend

Reverse

CARo _ LVS (inscribed in two lines).

Rx P (the letters R, x and P under a tilde, one globule in the middle and on globule to the right of the letter P).

Photo of the copy preserved at the Bibliothèque Nationale de France (public domain), link to the page of their website showing the photo of the coin: https://gallica.bnf.fr/ark:/12148/btv1b10413758d.r=charlemagne%20denier?rk=836914;0.

Hybrid coin associating an obverse of Charlemagne and a reverse of Pepin The Short? This type also resembles that struck in Aix-le-Chapelle which shows a reverse with Rx F.

Seems never to have gone on sale.