Awkward Mint Mark 1936 Mercury Dime

So I was examining this Dime and noticed a "P" in a weird place I also can't find any others like it? Any idea? Thanks everyone

 

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First off, the p mint marks were non-existent when this coin was struck. Appears to be a lamination but really can't tell from the pictures.

 

There were no "P" mint marks on mercs. Yours just looks like some type of damage.

 

I'll try to get a better photo

 

Not a mintmark, looks like lamination.

 

If you don't mind me asking what's lamination?

 

Somewhat of a better pic

 

Simple explaination is it's where a piece of coin metal is stuck to the surface of the coin before it's struck.

 

Interesting & good to know

 

not quite.... Lamination Definition: A lamination error occurs when metal flakes off the surface of a coin or planchet. It is generally believed that the flaking, peeling, and cracking is due to impurities in the alloy which causes metal to separate along horizontal planes of weakness.
http://www.error-ref.com/?s=lamination

 

I know what a lamination is

I actually think this is more in line.
http://www.error-ref.com/2011-01-31/
But I don't have the coin in hand and those pictures are too grainy to tell. The definition you posted is lacking in that if it is coming off or peeling from the coin, it is a lamination peel. It doesn't have to peel to be laminated.

 

Most laminations are caused by the rollers that are used in to draw the sheet down to coin thickness. Think of it as an ocean wave where the wind is pushing the wave but the resistance ahead of it is causing It to push up. Eventually the wave will break over but surface tentions prevent the wave from blending back into the sheet. An easy visualization is rolling biscuit dough with a pastry roller.

 

Plywood is laminated. Since silver coins are made of an alloy (mixture) of 90% silver and 10% copper, if the mixing is not done thoroughly, there can be "streaks" of copper throughout the alloy. This can create a boundary which can split off, creating lamination errors.

 

I'm going to throw in some more evidence -

 

then why give the OP bad info...

 

Prove what I said was untrue.

 

yes also refered to as a "woody" and known as "improper alloy mix"...

 

i dont have to prove it, error ref has done that. lamination error has nothing to do with a piece of coin metal stuck to the surface of the coin before it's struck...its all about impurities in the alloy mix..

again.. http://www.error-ref.com/?s=lamination

 

That definition is flawed as I have already stated.

 

http://en.mimi.hu/callurl.php?url=h...hu/m/numismatic/lamination.html&code=a098ed67
http://en.mimi.hu/callurl.php?url=h...hu/m/numismatic/lamination.html&code=1d0f5af1
http://en.mimi.hu/callurl.php?url=h...hu/m/numismatic/lamination.html&code=30087000
http://en.mimi.hu/callurl.php?url=h...hu/m/numismatic/lamination.html&code=0d8b56e5