Here’s a nice vintage MC Gregory Los Angeles mouthpiece for the tenor sax, serial number 15329. It is stamped a 4A 18 (medium chamber). Originally quite small, it has been opened a bit and measures .075”. There is a single small patch on the beak, to fill in a past indentation from teeth, but the work is good you’ve got to look very hard to spot it! No cracks, chips, or major scratches anywhere.