Is this jack Kramer racquet worth anything?

You might be able to get 10 bucks for it. There's a bunch on eBay that people are selling. It doesn't seem like people buy those old wooden racquets as collector items too often. Racquets from the 90s that are still useable are the ones people want. Racquet companies have been making cheaper stiffer racquets and charging way more money now.

Wooden rackets are nostalagic, romantic, etc, but they go soft and lack power and maneuverability, compared to today's rackets.

The old wooden rackets also had small racket-heads [surface area, in square inches] - not good for today's players. Many woodies were heavier than today's rackets, yet another negative.