Wrong or thin cent planchette?

This 1976 cent only weighs 2.5g instead of the 3.1g. It's also a little thinner than a regular cent. There is damage on the back, but not enough for 19% of the overall weight reduction that it should weigh.

Lighter weight coin:

Normal Coin:


Middle Coin is the one:

 

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End stock with a struck through?

 

Hi

Your Cent is rolled Thin Planchet with a Lamination.

Here is an example from my collection - even lighter at 2.43g

 

Thanks @paddyman98. Any value to this?

 

I hope so!
I have seen these selling on Mint Error websites for $30.00 - $60.00 depending on the grade. Raw examples.. not that much. It has to be thinner in order for it to be more desirable to collectors.