Impossible to answer without a DETAILED description of finish, barrel length, sights, box, accessories, papers, history, etc..
I AM REQUESTING THE VALUE OF THE STEVEN MODEL 66B .22 LONG-SHORT RIFLE
Fisher Stevens was born on November 27, 1963.
Gary Stevens was born on 1963-03-27.
June 27 2011>> It is worth $16.
June 27 2011>> It is worth $350.
June 27 2011>> It is worth $60.
As of 2012 the House of Dior is worth 27 Billion Euros
June 27 2011>>It is worth $26-$28.
Stevens Thomson Mason was born on October 27, 1811.
Stevens Thomson Mason was born on October 27, 1811.
Stevens T. Mason was born on 1811-10-27.
At the very best this rifle is worth around $27 in today's market. So it is not worth repairing. But if you really want to spend the money try searching "Air gun repair" on the web and locate someone who will repair it for you.