Quote:
Originally Posted by Aquarian Sports Cards
How many different homogeneous back complete sets can be made. If you exclude the big 3, can complete sets be made of Piedmont 150 Factory 25 backs? Do you have to eliminate the series (150, 350, 350-450) to be able to complete a Piedmont 25 set? How many individual back variations have an example of every card, and how lenient do you have to be of series and factory numbers to make it work?
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T206resource.com has checklists for all the different backs, here:
http://t206resource.com/Checklist%20Main.html
No back brand has all the fronts, but I think Piedmont (factory 25) comes closes, if you combine the 150, 350, and 460 varieties. Ted Z would know about this, since I believe he has an all-Piedmont set. To answer your specific question, there are only 156 different fronts with Piedmont 150 Factory 25 backs:
http://t206resource.com/Piedmont%20150%20Checklist.html