1969 D Jefferson Nickle - Strike Trough

Looks like foil but what ever it is, it is cool.

looks like a lamination to me.

It's not. And just to save you a lot of future disappointments, it is always best to not assume something odd is a mint error form the start. It is no exaggeration to say that most of what people post on forums is post mint damage or something that happened to the coin after it left the mint. Unfortunately too many youtube videos and wrong auctions online make people thinking that finding a valuable coin error is simple to do.



My first thought from the brightness of the pictures making it hard to tell is it looks like a pice of packaging tape stuck to the coin, which explains why you can see through it (if we are really looking through something at the details).

Then I read a pice of foil, which also could be stuck (glued?) to the coin...and this is another possibility I agree with..

Is it raised off of the surface as my monitor makes it look?

If you put it into pure acetone and it is one of the above it will likely come off.

It is a lamination error. Note the strike on that area? It is weak almost ghost like. A lamination is a thin piece of debris that is rolled onto the metal. While the hot roll process is going on, the cold die of debris is rolled onto the hot metal. Because if the just rolled on to the hot metal, it had slightly cooled a bit and thus after the rolling of the metal that was cooling, the debris/lamination piece is still clinging onto the metal, during the blanking process, the upset process that made it into a planchet. Then struck and after all of this, it later peeled off the coin. That is how lamination errors go their separate ways. If it peel off before the strike, the full strike would be showing. Because it is showing a weaker area there, then it peeled off after the strike. So some of the struck through errors, could be listed as struck through, but are actually a lamination error. This could apply even to different types of metal that were debris that was rolled on to the hot stock metals. So this is a lamination error. Because of the thin layer, I feel that it happened during the rolling progress on stock roll metal. If the area show deeper/thinner affected areas, the it could of happened during the strike. (that later fell off of the coin)

CoopHome: What causes lamination errors? How are struck through errors different? the thickness of the lamination peel. thick/thin or all the same thickness. These can partial peel or fall off on the coins. because the metal is rolled out, the lamination can usually be long in shape. struck through would be whatever shape/thickness of the debris piece.

I stick by my initial thought that this is a lamination error.

I'm in the lam camp.