The TU422L has a 16” bell.

https://mackbrass.com/tu422l-3%2F4-bbb-tuba

Sorry to hear about your tuba getting stolen ! I have used pirateship.com and it seems to save a bit compared to going to the ups store. Have you ever checked out uShip? You can list what you have and then get bids for pick up and delivery. They have insurance too.

Newly registered here as I just found it from Chisham.
Thanks ! EflatDoubler (same username as other site)
-I will be in Florida next week if you still have this for sale.

Pm sent