TB-250
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| Key | Bb & F |
| Valve | Taper Valve |
| Leadpipe | Interchanged 3 Leadpipes |
| Finish | Brass Lacquered |
| Inner Slide | Cupronickel |
| Outer Slide | Cupronickel |
| Bell | Yellow Brass |
| Bell Size | 215.9mm |
| Bore Size | 13.9mm |
| Key | Bb & F |
| Valve | Taper Valve |
| Leadpipe | Interchanged 3 Leadpipes |
| Finish | Brass Lacquered |
| Inner Slide | Cupronickel |
| Outer Slide | Cupronickel |
| Bell | Yellow Brass |
| Bell Size | 215.9mm |
| Bore Size | 13.9mm |