Monette C1115 boccaglio a tromba vintage con custodia antiscivolo
This Liston is for a rare Monette mouthpiece. Nice shape, and I’m not a trumpet player, so I don’t know much. I did find this. https://www.trumpetherald.com/forum/viewtopic.php?p=515659&sid=407ec898c42f7a1ead6a286fe4d8f841