[rand1com]

I would cut the Ruth, Cobb, and Young into nice even cuts and submit them for authentication/encapsulation probably with PSA if there are no signatures on the reverses.

Not sure who else in the book would be worth cutting.

The Ruth authenticated and encapsulated is probably worth $7500 or possibly more in a major auction as the "Sincerely" adds value and it is clean.

Young is a nice signature but the stain on the Cy will hurt it. Probably still $1500 or possibly more depending on how the cut comes out.

The Cobb is probably $1500 or so as well.

So, IMO, the 3 would be worth somewhere around $10K as long as they are authenticated and encapsulated.

I would probably also grade all 3 and the grades could make them even better.

Obviously, just one man's opinion.