Copper TS10 (new) vs Copper D4K (two weeks of daily carry)
I have never understood the thing with copper gear. Does it turn green and disgusting after long enough? It does look nice when new. Heavy though.
It just tarnishes to a dark reddish brown over time. Unless you leave it out in the elements like the Statue of Liberty I guess. If you've ever seen old copper cookware it's like that.
Also, sweet sweet thermal conductivity.
Unless it's abused it'll just end up like this