i would stay with the pennies too as was said you can double your money on ebay right now and don't have to worry about any penalties.
I'd say that shipping costs and ebay fees would make that a tough game to make much money on. My recommendation is to wait for the local coin shows and unload your pennies there. You might make a higher return.
Then you pull it out before someone decides to heat the cauldron. Otherwise, you stand to lose $50 face value in US currency. You'd then have to take the resulting whatever you want to call it and have it assayed. In the end, you either end up with nothing or about $93 in assay fees... plus your 16 lbs (give or take) of alloy.
Sorry, but this is just wrong. Nickels are not a FREE investment and you can lose. This is also a pet peeve of mine. First I will admit it is POSSIBLE to make some money, but a lot of things need to align for that to happen. I will not get into that now since it is not the point of the post. The point is that our currancy is not designed to hold for the long term. Our system and currency works best with mild inflation. You can expect inflation and need to plan on it. When you hoard cash and are getting 0 return on your money, you are NOT BREAKING EVEN. You are LOSING BUYING POWER. If you are holding an investment that is keeping up with infaltion. THAT IS BREAKING EVEN. So the bottom line is, if you have hoarded nickels for 30 years, and they are still just worth face value. You have LOST a butt load of money. There was nothing free about it. Mike