CARo _ LVS (inscribed in two lines, one globule between the letters A and V).
CAVI (the letters C, A and V linked, a tilde above and a globule below these same letters).
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/btv1b104137463.r=charlemagne%20denier?rk=300430;4.
|N°||G||F||XF 40||AU 58||MS 63||MS 65|
Seems never to have gone on sale.