BT-143T
| Key | Bb/F/Gb/D |
| Bore | 14.30mm-14.68mm |
| Bell Diameter | 10" |
| Body Material | White Brass |
| Bell Material | Brass |
| Outer Slide | White Brass/Chrome Plated |
| Valves | Original O.E.THAYER Valve |
| Finish | Lacquered |
| Handmade in Germany |
| Key | Bb/F/Gb/D |
| Bore | 14.30mm-14.68mm |
| Bell Diameter | 10" |
| Body Material | White Brass |
| Bell Material | Brass |
| Outer Slide | White Brass/Chrome Plated |
| Valves | Original O.E.THAYER Valve |
| Finish | Lacquered |
| Handmade in Germany |