From the pics it appears to be a Thin Brass Stamp Art, meaning a machine would have proabably crank out a few hundred of these. IMO it looks late century Export item and the only value would be in the unique decorative value. Since even the manufacture did not mark the item, or once had just a paper or Foil Label or even boxed, it would appear to be really hard to determine much. They are Cool looking and love the overall look, most likely look good in the 70's Decor.