There are 11 different confirmed brown Old Mills. Others here may know which of those have multiple examples known. I was under the impression that there were somewhere in the high teens of total confirmed examples.
THere are 12 (or maybe 13 confirmed Ty Cobb brand backs). I have been following them pretty closely for about 20 years and I can confirm 12. I personally know of 3 that have been crossed either from PSA to SGC or visa versa, so the pop report #s are skewed.
JimB
Edited to add: I was working on this as Brian beat me to the punch. Hi Brian.
