It certainly is interesting...I don't understand how the humidity levels would stay constant, seeing as copper wouldn't absorb moisture. Plus, would it impart any of that metallic smell to your cigars?
Certainly is a neat bit of memorabilia, and if it works for ya, all the power to you.
_________________
Events of the past, if not forgotten, are teachings about the future - Sima Qian
If liberty means anything at all, it is the freedom to say things that people do not want to hear
-George Orwell