The Toughest Hall of Famers to Acquire?

[mechanicalman]

Originally Posted by rats60

What about 20th century? Would it be the guys who played between 15 Cracker Jack and 33 Goudey. Most 19th century Hofers are going to be tough due to how few cards were produced prior to t206.

I’m not sure how rare they are but I’ve found it difficult to find cards I like of dudes who played in this era like Sisler or Heilmann.