1949 Wheat Penny

Hello all! I have about 6 1949 wheat pennies 5 of them weighs 3.1 g. But 1 weighs 2.7 grams. Your thoughts! Haven't been on the forum for a few weeks. Recovering from surgery.
Thanks for you responses in advance!

 

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Pleased to hear you're on the recovery side.

Is there any way wear might be a factor? We could sure use to see the coin in question.

 

Without seeing them, a quick guess would be one has been acid washed.