http://i227.photobucket.com/albums/dd202/Lar_Gand/DSC00035.jpg
(admin photo edit - images too large - link only - see Posting Requirements )

What I know so far about the hallmarks.
1. Unknown Maker
2. & (and)
3. CO. (company I think)
4. Date, unknown. Might be 1849-1851
5. Unknown
6. Arrow
7. Large Crown
8. A.M.
Any help appreciated, even if it turns out to be fake or copper.