Nice comparison Trent. My experience with the tuning bell Schilkes is fine up to mezzoforte after which the transition to loud is much less controllable than bells with braces. The brilliance just takes off - which is fine for big band jazz or combo work, but in a classical setting becomes a liability. Countless tests with sound posts did not solve my problem.

I liked the original B1 bell and the Kanstul Benge copy best. It had the right combination of core and halo for my ears. The other three were very good but not as balanced in tone/core. I have a student with a tuning bell Schilke B1, B6 and a modified C. The B1 and C trumpets have the best balance and playing duets has sum and difference tones bouncing all over the practice room.

For my tuning Bell Bach 229H, I developed a brace for tuning slide bells. That gave me the response advantage of a brace and the intonation advantage of the tuning bell.

If I owned that horn, it would also be a keeper. It is so much different than everything else and thus broadens the palette of colors that I could offer.

Saw the facebook entry. Lose the heavy caps and replace the leadpipe and receiver and the horn would be well on its way to at least being in tune. This problem pops up even with professional trumpets. Monke rotary Bb and C trumpets occasionally had the same issue. The G on my natural trumpet is "naturally a bit high". Not quite this much, but it does require attention on a regular basis.

The top line F is sharp on my Bach 184 cornet. I always have to trigger the 1st valve slide a little to get it in tune. How sharp it is varies with the mouthpiece I'm using. The top line F on my Bach 43 trumpet is spot-on in tune, though.

Did you try emailing B&S customer service? Since they are still in business, that seems like the easiest way to go, to me. They are German, but a company their size can surely answer emails in English.

I know this thread is a few months old but, check out a similar 1933 Selmer Balanced in action here!,

A last mouthpiece blowout, apparently. Facebook link, sorry for that. Big discounts!

https://www.facebook.com/kanstulfactory/posts/2709576339076437

"This is it! Last week to order from Kanstul.
We still have mouthpieces. Bigger discounts. Call or email for info. 714.563.1000/sales@kanstul.com. (When inquiring please know what you're looking for and we'll see if we have it. 🙂)
All sales final."

A few weeks ago the discount was 70% so I wonder what it's like today.

I like valves that never let me down. My Getzen horns never let me down but the new bought Straub with Baurnfeind and my 80's Bach did... That was The Horror

But actually, at least 60 second hand horns later, I never had valve issues with later horns like Conn 22B, Conn 22B USA, Julius Keilwerth, Selmer Radial, Selmer, Yamaha (even one with plate loss!), B&S, Antoine Courtois, Melody Maker, Martin Handmade, Jupiter, XO Brass, King, Schenkelaars, Olds, Buesscher, Holton and the ones I already forget had fine valves so what can I say?

I like the Yamaha valves and the valves of my later Bach trumpets where great as well; good compression even after 30 years of intensive use.

Since I like Getzen instruments I tend to have a favor for Getzen valves but actually I have to admit that there are many great valves out there