Penny Almost Clear, Error Or MD?

Thanks, it is 2.6g.

Yeah I agree with rackster, almost definitely a die cap

Pyrbob - can you explain the difference? Thanks.

Rackster, a die cap is the coin that sticks to the die. Then the coins cycling through being struck by it are called struck through a die cap which is what we see in the posted coin.

Yes die caps do fall off. They come in different configurations depending on how long they continue to strike coins. They can look like a large broadstrike (but with evidence of being struck more than once) or they can look like the popular cup shaped die caps if they strike so many coins they extrude up around the die giving the cup shape when they drop off.

It's easier to imagine when you consider up until 2000 you could get BU coins in cloth bags. The cup shaped die caps being found by a collector then makes more sense. Since then they would be found by the coin processing companies like Brinks and Dunbar who get the large bags and break them down into rolls for the banks. But with the new processing the mint has installed fewer of this type of error makes it out into the wild.

Oops, yeah, that's what I meant the second time too, my bad

Thank you, I so a couple of them on ebay. looks good.