Is it possible ... Old Mill SL Brown

[greco827]

Many people have posted about an Old Mill Brown which is just faded black, and some are definitely harder to tell than others, especially without having a legitimate brown to compare to. Anyway, this got me thinking ...

Is it possible, or has anyone come across, any older PSA graded Old Mill SL cards which are brown? I ask because initially, they were all marked as T206. Then they added Old Mill to the label, but made no distinction between the Old Mill BBS and Old Mill (SL), and only later added the (SL) distinction to the label for southern leaguers. Seems like it would be possible that there may be a few gems out there which aren't mislabeled per se, but simply "under-labeled". Has anyone ever come across any of these or know of any stories where this has occurred? I suppose Lenox would also be possible, just so much less likely.