...at Fantasia and Dragon's Den when I was a teenager in the late 1980s. One of the guy's who worked at/ran Dragon's Den, Mark Rubin, has been owner/proprietor of American Legends across the street on Central Ave. for over a decade now. (He used to call it One If By Cards, Two If By Comics, which I thought was a much more fun name). You can check his shop out here:
http://www.amerlegends.com/
I certainly agree that autographed T206 cards merit serious scrutiny for obvious reasons. And, wherever possible, I try to have provenance with my collection. The Doyle I showed above was from Jeff Morey himself and I even interviewed him about the autographed cards he sent me, so that I would have as much comfort as possible in my collection of signed T206 cards. (shameless plug - Y'all can hear my interview with him and Lionel Carter on my website.) But it does seem that every time a discussion of signed pre-war cards comes up on this board, so does the name of "Dr. Koos." I find that kind of sad, but not totally unexpected. Frankly, it's the Dr. Kooses of the world that empowered the PSA/DNA and JSA folks.