I don't know what the future holds for P42's but I suppose that similar to T206, eventually us T205 collectors will start to migrate mostly towards rarer backs and miscuts. Once you've seen enough of the fronts on T206's (which are everywhere

), I guess you have to look for some variety. Same could happen to T205.
With my own collection, I have a full set of mostly common backs, and have started gathering Cycles and Sovereign for future sets because I like them. However, I cannot see myself paying big money for a Drum , Broadleaf or worse, a blank back!
I can barely see the factory number on most of my Piedmonts, so I can guarantee that little pair of numerals does nothing for me!
I hope they go sky high so I can sell the couple I got accidentally got and get something I like better!!