This awesome instrument has the distinction of having the largest fixed upright bell in the whole collection. The 23“ bell of this tuba must have been special ordered, as the standard model was supplied with a 22” bell. The front action valves were also unusual, as this model was commonly supplied with top action valves, although front action valves were available to order. Holton’s trade name for this largest size of BBb tuba was Mammoth, and they referred to front-action valves as “American-style”.
This model gives a vision of what was to come, as the great Holton 99 and 345 models were built in the same plant as this tuba. This tuba could be considered the grandfather of those tubas.
![Image](http://i1.imgrr.com/1F1/2587_D5DF1ECF-4E68-4553-8B4E-EF50F44A47E3.jpeg)
https://simonettitubacollection.com/ins ... -3-piston/