About 15 years ago I bought a used trumpet at a local shop... It was a Jerome Callet. I knew nothing about it but loved how it played and sounded. Over the years I've gathered bits and pieces here and there about it but nothing seems to be my exact horn. It's silver, the bell says Jerome Callet New York and the lip where the mouthpiece enters says SLB. I take that it's a New York model with a super large bore. There's just one thing my bell is removeable. There are 2 thumb screws 1 on the left of the 2nd valve the other behind the exit of the 3rd valve. Loosten them and you could swap out the bell for another if you had one... Ther serial reads F4404 Any help identifying the exact model and a crude appraisal would be greatly apreciated.