Looks alot like one of these
Germany Saxony (Weimar Eisenach) 2 Mark
http://coinquest.com/cgi-bin/cq/coins?main_coin=13190
Looking at the slope of the back and bottom of the neck, yours does look closer IMO
I agree, that is the coin. Look at the letters also. In Nectars coin, at the right 90 degree mark there is a space then an V then a space. The actual coin looks to have no spaces, and an E at that spot. That's exactly what is in the French coin, no spaces and an E.......
Great find! Somewhere in the 1852-1865 date, I think......