The sets you listed I just dont see them as the same set with different backs like T-206's.
I think you could compare the T206 rare backs with a set like the M101-4/5 and you see a lot of similarities. The tough backs in both took off a number of years ago but the M101 have been coming off some I think mainly from a few large finds. IMO the run up in T-206 rare backs has had more to do with a few advanced collectors going for master sets and the bidding gets very heated when the toughies they need pop up and that's driving up all the tough backs. I think many used to be happy with a set of 522, not the case right now.
You can see this in sets like E94/98 colors and OJ Poses, I just think there is a trend where some collectors are moving to master sets and it really drives up values in different ways.
Last edited by smtjoy; 03-14-2014 at 01:26 PM.
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