could it be struck on a nickel planchet?

if a quarter was struck on a nickel planchet, would the coin get bigger as it was pressed and be quarter size? or would it be nickel size with some quarter details? reason I am asking is because I have a 1981 P that weighs exactly 5g. there is no corrosion damage or anything. it looks normal

 

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It would be smaller than the size of a normal quarter, but I think a little bit larger than a normal nickel because of the expanding metal.

 

If a nickel planchet is struck in a quarter press the diameter would be larger than a nickel and the thickness would be thinner than a quarter. The weight is correct for a nickel planchet.
Is there any evidence of a copper core? If not, it would be one to send in for authentication.

 

yes there is a copper core. here are a couple pics. what other possibilities could there be?

 

I don't think it's a wrong planchet error.

 

bryan, how accurate is the weight measurement? What does your scale read for a nice cent?

 

This quarter may have been struck on a rolled thin planchet or a dime stock planchet. There are some quarters that were struck on dime stock where the mint workers mistakenly punched the quarter planchets from metal intended for dimes.

 

Rolled thin, but not dime stock. It is too heavy for that.

 

ok ty everyone