Hi Pete,
Since I know how much you love T206s

, I thought I'd add scans done this morning to this thread. There is a clear difference in color between the lot #181 Cobb ("orange") and all the other red Cobbs in the auction. As with any printing oddity, variation, etc., individual collectors will decide how they perceive and value the card.
Brian
Compared to lot #206
Compared to lot #194 (closer, but still different, and actually a bit more pronounced in person)