[Ronnie73]

Interesting theory on the Demmitt and O'Hara (St Louis) variations. I agree that the population numbers are more in line with the 350/460 print group. The sad reality is it makes these two key cards which many consider their base set complete at 518 cards without them, the two most common Polar Bear cards out of the 250 different Polar Bears issued.

I'm currently working on a Polar Bear Back subset. I have about 20 to go. I recommend this subset to others. It is a challenge to put together but not impossible. There really isn't any one card difficult (I don't count Dopner in the set) but the difficulty does follow the print groups. During my journey I can say that Print Group 460 is most difficult and Print Group 350 is a bit more easy. Print Group 350/460 cards are almost always available. Polar Bears are condition rare so for a real challenge, a PSA 4/SGC 50 or higher set would keep you busy. One last thing about the Polar Bear subset is once your done, your nearly 50 percent complete of a 524 card T206 set.