They are the arms of BON(le) of Hainaut (France) a part of the former province Flanders and Hainaut, which is now part of the Walloon part of modern Belgium.
It does not appear to be a cheap peice of wood,, or metal..im not sure really. it has very intricate carvings to say the least and is a very solid plaque. it still has some color too it, but it is kind of dirty looking, and i was told if it had a surname with it was possible fake, well it does have a surname on a banderole below it...
Say no more ...
Genuine arms do not depict the surname of the owner - only 'bucket shops' do that to appease and fleece the heraldically ignorant. They may be solid looking, but they definitely appear to be the product of a 'bucket shop' - the crest itself is completely wrong and is a typical 'bucket-shop production'.
To know if you had any legitimate claim to those arms you would have to do a proper genealogical search back to the person who was afforded those arms in the first place (on 23 May 1723). Without a documented paternal link, you would be illegally misappropriating someone else's arms. Just because the name is the same, it does not follow that the bloodline parental link is there (that's why there are over 500 arms registered in the surname of Smith). The name might be thae same, but the bloodline might not be.