Want to turn your basement bar into the Roosevelt Avenue Pub? Buy the sign for $500. Yearn to have the wizened face of Casey Stengel or Yogi Berra hanging on your wall? Take home a mounted photograph for the right price. While many of the items have a fixed bar code — it’ll cost you $50 for a brick — others are on the auction block. A catalog of available items, all of which have been authenticated by Major League Baseball, can be found on mets.com/shea. More information and personal appointments can be made directly through MeiGray at 888-463-4472.