This vintage Jet-Tone Custom Model MF trumpet mouthpiece is in good condition! It has some wear and tarnish to the finish consistent with its age. The only actual flaw is that there is a very slight bend around the end tube opening. This doesn't seem to impact performance but is most likely and easy fix if desired.
We have two of these same mouthpieces available with nearly identical wear. Location of tarnish spots may vary slightly.