The mint is more interested in production than quality so there is an allowable tolerance on the weight of coins.
Sometimes the strip from which the blanks are punched can be slightly thicker or thinner than normal.
In your case the blank was slightly thicker but still within the accepted tolerance.
Sometimes the strip from which the blanks are punched can be slightly thicker or thinner than normal.
In your case the blank was slightly thicker but still within the accepted tolerance.

























