Nice Donlin's everyone!
I'd say more than 20% of the T207 set, when you get down to it. They're out there, but it always seems like when you need one. Mine were Donnelly and Birmingham. Now the Donnelly seems to show up regularly...
To your original point, though, Pete, in T207 there are a number of the Recruit-class cards that are
much tougher than their counterparts. T207 set collectors either know about them, find out out about them pretty quickly, or are really lucky...
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Mike