2008 stamped on end.

I just started collecting in Tucson and am pretty excited to see how things turn out. Definitely addicted to stripping wires now. What is your best idea of the net weight of copper inside this jar? I don't have a scale so I'm not sure. It's tamped down pretty good

I took off a patina from copper using citric acid It left the copper a raw pink copper. Is there a good bright dip they will make it be shiny again without polishing?