CARo _ LVS (inscribed in two lines).
DR _ SA _ LT (degenerate legend inscribed in three lines, with an ax standing on the right and a globule on the right of the ax).
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/btv1b10412475d.r=charlemagne%20denier?rk=1030048;0.
Difficult to know what is inscribed on the reverse, I noted in the description what seems to be the most likely.
|N°||G||F||XF 40||AU 58||MS 63||MS 65|
Seems never to have gone on sale.