Kevin,
Interesting question but I don't think the numbers are too shocking when we start analyzing by factory numbers. At that point there are 39 different backs so if one of them constitutes 2-3% that is more or less to be expected. Among Sweet Cap backs it may be on the tougher side.
I actually think the Sweet Cap 350-460 factory 42 no overstrike is the toughest Sweet Cap back, at least from my experience. When I started paying attention to factory numbers for my back run, I had ZERO examples of this back out of 600 T206s in my collection.
JimB
