A lot of people criticize the accuracy of the pop reports but they are an important tool and are actually pretty accurate if you know how to use them correctly. Us collectors are responsible for most of the inaccuracy's in the pop reports with the crack out re-submit and re-grades.
If you compare two subjects that are fairly equal like two regular commons or two fairly equal HOF's you will get a pretty accurate gauge from the pop reports. There are instances that require other tools like past sales and general knowledge to get a better gauge. The Lundgren is a good example because he is one of the higher profile commons who is more likely to be graded and re-graded but he's also more likely to come up for sale and most people that collect T206's know that his PD350's come up for sale as often as any of the other 10 with the exception of Ganley. If someone is attempting A Piedmont elite 11 they will have more opportunity's to pick up a Lungren than they will a Spencer or Shaw and the pop reports, past sales and general knowledge all reflect that.
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