That's a good one you have there for sure! I agree that you have the tarnished copper of the still and tubing a very real looking color.
Moonshining was very widespread here in my part of the NC mountains through the 1960's and still is close by... but no sir, I'm not talking!!! I can walk you to a landscape hidden spot just a few hundred yards from "here" where the very clear remnant's of a still are scattered about like a living museum just like it was after the law blew it up.
You might recall "Junior Johnson" one of the original Nascar founder's and racer's of all time lives only a stone's throw from me and you might enjoy reading about his famous adventures in moonshining:
http://en.wikipedia.org/wiki/Junior_Johnson
Thank's for letting us enjoy this very nice piece of your's!