[Bridwell]

Hi Andrew,
On the board there have been some ranking of the rare backs from T206 in other threads. The Piedmont 42 is on the list, so you can compare it's scarcity to other backs, such as AB 460, Cycle 460 or Hindu. I doubt anyone has figures for the number of graded or ungraded in circulation. I don't believe SGC or PSA keeps POPs for P42's separately.