Table of a sampling of Bore and Piston sizes for Distin Low Brass
| Horn | serial | lbore | piston size |
| Tuba | 5610 (1889) | 660 | 938 |
| Tuba | 9511 (1893) | 660 | 869 |
| Tuba | 14368 (1896) | 660 | 938 |
| Euphonium | 11376 (1894) | 570 | 870 |
| Euphonium | 19455 (1906) | 570 | 872 |
The tubas appear to be the same model and the euphoniums also appear to be the same model.
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