At one point there was a chart, or maybe a list, That showed all the wheat pennies by mintages, by year. It then was broken into decades and had allotments for environmental factors of loss. The chart in the end allowed you to see how many coins of each decade should theoretically be in a 5000 count bag of "unsearched" wheats. I remember some conversation as to the chart not being accurate and whatnot but it still was a basis, or starting point if you will.
Does anyone else remember this? or have a link to it?
It may have been somewhere else I saw it but I am thinking it was here.