Who always gives you trouble authenticating?
 

I'm just curious what players still are tough for you to authenticate by yourself. I've been collecting for quite some time and I've been fooled several times but especially Christy Mathewson & Roberto Clemente. Any time questions appear on this forum about either of those players I know I shouldn't chime in. What players still give you trouble when it comes to authenticating?

Usually the.ones with short names

Ken hubbs, don hoak, come to mind.

Mantle on nearly anything, DiMaggio on items other than late 80's - death baseballs, Williams on flats. If i'm looking for any of them to add to my collection, I am known to overanalyze it. I have taken a gamble once on a 56 Yankees Team ball for Mantle. The price was right and the other signatures I had enough familiarity with to confidently say were real to include an Elston Howard that I wouldn't be out money if the Mantle was clubhouse even after Fido made it his personal chew toy. All of the rest of my Mantle and DiMaggio's I have purchased from the same individual who I have complete trust in and commonly refer to as a Mantle and DiMaggio expert.