It's the mark of Jacques-Jeremie Hubert, buckler, working at 40 rue de Montmorency-Reunion, mark registered 1805-1806 with no cancellation date noted. (The "O" is not an initial, but part of the device: a coquille under a ring.)
I was unable to find much information on him. Searching his name I find a dental mirror, some flatware and a few other small items by him, some of which also have the Minerva mark, indicating he was working as late as 1838. However, he definitely died before his wife, Marguerite Nicolle Rosalie Rodollet, who is named as his widow on her death record of 25 April 1841 and the inventory of her estate.
Hope this helps!