I really like this style of tramp art, where carved bits and are laid in side by side at the diagonal rather than stacked, making for wonderfully graphic pattens--and an easier to manage frame! And the back on this I think is just about as beautiful as the front. It's quite an old one, in old brown paint, without a lost bit that I can see. 

Overall: 5 7/16 x 7 1/6. Opening: 4"x 2 1/2". Very good condition. No glass, and loss on the back to the frame for holding a piece of glass, so one would need to do a little taping or add a bit or two. Or just treat it as a beautiful object. Perfect size for a tintype.