Hey Pete
I don't know about Pelty and Titus......but, as you know the Joe Doyle is a known phenomena dating back to the early 1980's (ala Larry Fritsch, etc.).
The Shaughnessy card has always been a "toughie", going back to the 1970's. Frank has always had a strong following.....he is in 3 - Canadian HOF's,
former International League President, etc., etc. His T206 is not tough because someone(s) are hoarding it.
TED Z