[ThomasL]

I have seen better examples of JP Conley and Foster Blackburn (a shaky cursive signature of Blackburn)

I think this kind of relates to what you are asking about

Also consider that cleaner sigs might be wife signatures....I dont know if anyone has really talked about Wife signatures but I bet some fan mail requests were handled by a wife or family member

I have held on to these as an example

Charlie Robertson signature was pretty shaky later in life. He was pushed back in the public eye after Don Larsen's perfect game. I chanced across a check his wife signed and it explains why two cut autographs I had (one pictured) looked nothing like his other signatures.

The note on the check "Car Repair" is in his hand writing