Unidentified mark seal stamp

[vervene]

Hi,

I have this stamp, but I don't found the hallmarker. I thinh there is two heads of wild boar, but what can be the "CM" hallmark ?

Thanks a lot !

[zilverik]

Hi vervene,

The two heads of the wild boar (Tete de Sanglier) was used between may 10, 1838 and december 29, 1961. Only for small works.
The mark C.M is not a French mastermark. Maybe a retailersmark. Please have a good look for the mastersmark in the form of a losange.

Regards,

zilverik