Buescher True Tone altos of that vintage usually bring between $800-$1200 in good-excellent condition. A complete sax without dings or dents, needing repairs is worth $300-$500. Tenors are worth a little more. The more valuable horns are the bass saxophones, which often sell for more than $5000, the baritones, which often go for $2500 or more, and some of the rare sopranos and sopraninos. There was a sopranino up for bids a short time ago that sold for over $6800, which really surprised me! It was in better than excellent condition though, completely restored. I'm keeping my eyes open for a TT tenor.