When I first started collecting signed T206s, someone on Net54 suggested that my cards may have originated from the Jeff Morey collection. After a little research, I was able to track down Morey and interview him about his decades of autograph collecting. The audio from that interview is on my website, for those who are interested.
During our discussions, Morey told me that he had kept a few of his signed tobacco cards because Mastro didn't seem to want them at the time of his major sale about six years prior. He had 18 signed T206s and T205s which he sold me, including the best condition autographed T206 card I've ever seen: