Bürzelmeier Cornet Backbore. Model number is AKLS G. Compatible with Warburton, Kanstul, etc. For more detailed information on size, shape, playing feel, and for used mouthpieces and new mouthpieces, please search on Net Brass. Please check the images. There are no major scratches or dents that would hinder playing. Please refrain from comments asking for a price reduction. Instant purchase OK. Type...Trumpet Type...Trumpet (in C / B flat)