TubaForum.net

This went fast. I didn't even have time to post the link before it was sold.

https://www.ebay.com/itm/325136272155

I realized immediately that those are rare and popular, but
- They're not to me personally.
- I have too many other projects.
- I just completed an epic B-flat project roughly a year ago.
- I immediately decided that an end user should be the acquirer.

When I click, if says the listing is ended and unsold.

Sold elsewhere?

A listing being "Ended" might not be the same as sold.

Possibly sold, but outside of ebay. Also possibly the seller just changed their mind.

This is a big bore tuba. After 1921 or so they expanded the bores on their full size horns. Rare!

A front action version of this horn in lacquer just sold in Germany ebay, likely B&M.

Of course, the smaller ones continued to be made, but they never combined the 3/4” bore with the shorter model, did they?

… and the shorter model’s bell/bugle really weren’t much smaller – at all – than the taller model.

I believe those who have stepped up the bore size on the smaller model to .687” have found the magic combination. (Holton offered a nearly identical version - comparing with the York short model - throughout the decades - from the 1920’s all the way to “Phillips” - shortly before they were shuttered) that was always paired up with a .665” bore - roughly 1/100th of an inch larger than the York bore.) Those things having been said, I don’t believe that cutting either the shorter nor the taller version to C seems to be very successful, as far as creating an instrument that can be played as easily in tune as the unadulterated B-flat bugles.