3.11g is the target weight. Manufacturing them allows for fluctuations. Some planchets may be thin and underweight and others may be thick and overweight. Yours is slightly underweight.
In Memory of Crazyb0 12-26-1951 to 7-27-2020 In Memory of Tootallious 3-31-1964 to 4-15-2020 In Memory of T-BOP 10-12-1949 to 1-19-2024
Mint tolerance is +/- .10 grams starting in 1982 on the copper plated zinc cents and .13 grams before 1982 on copper cents. Also sometimes circulation wear makes them a bit lighter. John1
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