Thin Jefferson Nickel

[Yak1366]

I came across this 1961 in a collection of nickels & wheaties in a jar, that one of my relatives wanted me to look at and see if anything was worth keeping or of value.

Using a set of digital calipers, the thinnest edge (with no wording etc.) measures 0.016" (0.40mm).
The center thickness is 0.027" (0.69mm). And it weighs 0.98g (about 1/5th) of a normal nickel.

Maybe a test strike on a thinner blank or sheet?

Also notice, no rim.

 

[TwistedT]

Yak,
I'm thinking it is a cast coin. If it came that way from the mint being that thin one side or the other would not have been stamped, maybe neither side would have being that thin.

my reasoning:
look at the obverse - the portraits arent the same. on the thin one - the forehead, jawline and nose are different as well as the collar.
on the reverse - the building is dull.

and overall the words do not look crisp - doesnt look like it was stamped into the coin.

this is just my opinion of course - lets see what others say

 

[jewelerguy]

high school science class acid experiment

 

[Gavinsdiscoveries]

attempted forgery? - I have also heard myths about nickels being struck on dime planchet - Rolled-thin planchet: A coin struck on a planchet punched out of stock that was rolled too thin on the rolling mill.
hope this helps Gavin M.