Those to the left have been produced in polished bronze, while those to the right are in blackened steel.
The unpolished surface of the steel gives the form an old, corroded look I think, which quite suits it. I might get another pair in polished bronze though, to see how it looks with smooth reflective surfaces.
I've ordered some more of my designs, and I'm all a-quiver to see how they look in the real.
NOTE: click on the photos to see them in giganto-bloato form.