Yep, already checked. I've been checking pennies from a five gallon glass water bottle for several months. The zinc went to coinstar, and the copper went in a bucket.
I know, I know "who cares" http://www.commoditytrademantra.com...indicator-a-better-inflation-hedge-than-gold/
When I search boxes I save the copper ones out too. Its costs me nothing but the money invested and space...thats it. If it doesn't pan out then its worth no less than the money I have invested in it. So people go batty when you explain it to them.
Why would you? There's so much copper in circulation that can be had for face. It wouldn't make sense to buy it with a premium. Especially when no place that I know will currently take copper cents for metal value...yet. The future maybe different and then premiums might make sense. However my local coin shop does take wheat pennies at 2 cents per. So if I have common dates and such I get return on those I pick from circulation.