Awkward Mint Mark 1936 Mercury Dime

Then what would you call a coin struck through, say, a piece of metal?

The last I knew, "lamination" was the result of an improperly made planchet.

 

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Those two are completely different. A lamination is a planchet flaw where the metal the planchet or blank is punched from is laminated. It can be caused by incomplete mixing of alloys or from the drawing down of the metal by rolling. A strike through is caused during the striking process by foreign material being struck into the coin.

 

See the problem?

 

The finest swords and knives are laminated from the same piece of metal. Doesn't mean the metal was improperly mixed. They were laminated during forging by the maker.

 

No. One clearly states before. The other during.

 

Edit. Did see a spelling error that was corrected

 

dude, planchets are not "laminated", "lamination" is just the term used..."The term “lamination error” is grammatically incorrect as the metal is actually delaminating. While “delamination error” would be the proper term, we’re stuck with the terminology we’ve inherited from previous researchers." and even your post proves that its caused by impurities in the alloy mix.....

 

Lol it is a lamination error. A delamination error is referred to as a peel. It does not have to peel to be a lamination error.

 

Please... you're reaching here.

 

From the webpage you provided - quote "may become trapped just below the surface of the metal" closed quote - It states below the surface of the metal not on the surface

 

Also from webpage you provided - quote " delamination - Metal missing or retained but peeling from the surface due to incomplete bonding or impurities in the planchet" closed quote - It states in the metal not on the metal

 

From the Webpage you provided -

Now that's telling me it's a peel

 

From the webpage you provided - quote "lamination: a “peeling” defect in a planchet caused by air or impurities when the planchet strip is rolled out." closed quote - peeling again

 

Ok now who is grasping at straws. Delamination is just that. "De" undoing of, reversal of, meaning becoming unlaminated. As in Peeling from the surface. Before anything can be undone, it first has to be done.
If you fold over a piece of pure metal and hammer it flat will it bond? It is laminated. It doesn't bond in most cases because there isn't enough energy applied to break the surface tentions of the metal so that atomic bonds can be created. It's still the same metal. Fold it again and you have four layers of the same metal laminated but not bonded.
I explained earlier about how rolling out a sheet of metal will in some cases cause folds in the metal. These folds are laminated but not bonded. They don't have to peel off to be laminated.

 

I also provided an explanation of what I thought was actually on this coin. It is technically a lamination, but is caused by the metal raised by the upsetting mill in forming the blank into a planchet. The raised metal is folded over during striking, creating a layer of unbonded metal on the surface of the rim.

 

no, not laminated, just folded, its only laminated when you permanently assemble it by heat, pressure, welding, or adhesives.

 

Let me guess you.looked that up.

 

i knew that...

 

A woody would be with copper coins.

 

i asked this on the coneca forum few months back and the reply was, not true, it can happen with any alloy mixed coins...