Cover Art - for valves

Well, luckily I may be able to keep it. It doesn't really match my engine bay though... I think this would be a great piece for a turbo car actually. Or something silver or any other color than copper I'd imagine. I'm still not done and haven't worked on it in several days. After I'm done with this one I'll but another one and maybe make it 1940s army style.... hmmm. But what would this be worth is the question?