buffalo nickel rust? or not nickel made

found this two buffalo nickels but there its something wrong with one of them any idea might lost the nickel layer ?

 

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Uh, no . . . .

Z

 

Buffalo nickels aren't clad they are made from a .750 copper and .250 nickel.
So it is impossible to be missing a clad layer.
Think ground level or better yet below ground level.

 

Completely stained from being in the ground.

 

Metal Detecting coin.

I've pulled them from the ground like that

 

ED, Environmental Damage, as mentioned above, it was probably in the dirt for a while. @paddyman98 can show you "tons" of coins he metal detected that look the same.
Welcome to CT BTW. Good luck on your searching.

 

Nickels don't have layers..
Here are my 2 Buffalos and Jefferson Nickels detecting finds
All with Environmental Damage

Long term exposure to soil, dirt and sand will tone the Cupro-Nickel they are made of.

 

Paddy that Buffalo in the 2nd picture looks like it was at the battle of the Little Big Horn in Montana.

 

I'd call it "soil toning".

 

I just call it soiling .

 

From soiling in the ground for so long nice finds