I tooted a handful of notes on it when I unpacked it.
Yesterday evening, I performed an hour-and-a-half-long brass quintet concert/recital in front of a bunch of orchestra patrons and their friends.
I decided to take this (with no back-up) and test by fire (no servicing, no dent removal, no nothing.
I oiled the valves (for the first time) AFTER the little rehearsal.
It's the *first time I've ever used a B-flat tuba to play brass quintet music.
The only other B-flat tubas that I own are my sparkle sousaphone and a rare Miraphone model (1)90 kaiser B-flat...
...I never read sheet music when messing with either of those, but (well...) didn't we all read sheet music and play B-flat tubas for at least six years in grade school...and then in kolij marchin' band...??? (It's like riding a bike...You don't forget.)
I like this big-little/little-big thing a lot.
I believe it's probably a mid-1960's (1967 - the Beatles' I-Am-The-Walrus year) Holton "Collegiate model 560, which retailed for $510 ($4000, adjusted for inflation).
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*EXCEPT when I've pulled school sousaphones off band room walls to use on one piece - in front of high school bands, on Ole Miss recruiting tours...maybe to play our often-chosen-to-be opening tune: the P. Grainger band piece, "Shepherd's Hey" - to demonstrate that "It's i]not[/i] the fancy tuba that guy has".