In general the bulk of the value will rely on if the bat has a player endorsement. Without a player endorsement the bat will have little collectors value. The value on the bat will then rely on vintage bat features which the Adirondack bats from the 1950's have very little. The age of the bat will hold the value and the bat would be worth in the $20. price range or less.
There are many factors needed to put an accurate value on the bat. Player endorsement, make, model, size, age, and condition.
Adirondack / Rawlings has used different center brands in their history. By identifying the center label, trade marks, and patens you can narrow down the year to what era the bat was made. Visit the Adirondack Bat Dating guide located below (Related Links) You can match the markings on your bat with the easy to use bat dating chart to get an approximate date for your Adirondack bat. Store model, Professional model or game used. With Louisville slugger, and Adirondack bats in short, if your bat has the size stamped into the knob it is a store model bat. This is placed there to help the buyer identify the size of the bat. Examples of this would be number like; 6, 06 036, 36, MM6, PR6. These marking will indicate a 36 inch bat. When letters proceed the number like MM6 or PR6 it is indicating the player model initials followed by the size, In this case MM6 Mickey Mantle 36 inch, and PR6 Pete Rose 36 inch. Adirondack Professional model bats will typically have the model number on the knob followed by a Letter. for example Hank Aaron used a 63 A, Mickey Mantle used a 288 D.