the winnipeg mint strikes coins at high speeds into bulk bins, then goes to a laser optic scanner to cull out errors, then to the rolling stage. Thus the clever marketing label of last million distributed, even with roll #20000 it is just a roll of random pennies from the last million or so. There is a small chance a dime might be stuck in the bulk bin from previous production but in the last 3 years or so the new laser has eliminated most errors.