I've found Spanish, Canadian, and British silver, but never French Silver! Fantastic find!!!!
IP is right, it's copper: 2 Sols - Louis XVI (FRANΓAIS) - France - Kingdom - Numista
The ones we dug, and probbaly like the one posted here, sure don't look anything like a typical copper. There must be zinc or something else mixed in. They come out almost like dug tombac, slick and grey.