This makes some good reading on a slow day! The Price Guide that became "the book" when people say "it books for..." It came out in 1979, when apparently T206 commons could be had in NM for $1.60, a NM 52T Mantle was $500, a Nolan RC was $1, and a T205 Cobb was $25 in perfect shape. Definitely a fun book to thumb through.
Bidding starts at $1, with $1 increments (you can pay in Ryan RCs if you want). Add $2.50 to ship Media Mail.