[markf31]

As we all know, many of the still living HOFers sign autographs like they're going out of style, and many of the recently deceased signed in a similar manor as well when they were still alive. My question then is, in your opinion, what HOFers really limited their signing sessions and autographs and as a result their signatures are more uncommon and rare? There are the obvious pre-war players such as Wagner, Cobb, Mathewson, etc… But I’m thinking more along the lines of players from the 1940s to today. Thoughts?

I know Sandy Koufax rarely does signings, one of the reasons his autograph is valuable compared to other pitchers of his day.