CARo _ LVS (inscribed in two lines with the letter S inverted, one globule between the letter C and the letter L, another between the letter A and the letter V).
A - M _ S - S (inscribed in two lines, a large cross in the middle. A letter at each corner of the cross: the letter A at the top left, the letter M at the right, the letter S inverted at the bottom left and the letter S inverted at the right. A tilde above the cross, one globule on the left of the cross, another on the right of the cross and yet another below. One globule above each letter S).
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/btv1b10413653s/f2.item.
One 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=2378145&viewType=detailView. Same obverse die as the copy from the Bibliothèque Nationale de France.
The reverse legend seems to be A - M but a doubt remains, it is possible to read M - A ... there is a leg to the left of the first letter. In my opinion, it may be a coin defect like what is to the left of the letter S just below.
|N°||G||F||XF 40||AU 58||MS 63||MS 65|
Seems never to have gone on sale.