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Looks rather similar to the YEP-321 for which Denis Wick made his 4AY model. I have used the for my B&H Imperial baritone, my 3+2P de Prins Saxhorn basse, my Kanstul G baritone, my Besson G bass trombone, and probably a few more since 1978. The silver plated version lasts longer than the gold plated ditto.

V. Bach 3 is slightly wider, but not as deep, resulting in a more trombone like sound. The Bach 6 1/2 A would be a very common find, but is somewhat smaller. Bach makes the G bass cups with small stems on special order.

I haven't tried the Schilke 51D, but that model is often mentioned in contexts like yours.

Klaus Smedegaard Bjerre

Bob1062 wrote:Hellofa score!

I have heard that some tenor tuba mouthpieces come/came in small shank (possibly Marcinkiewicz?).

There once was a Miraphone "Self" mouthpiece which was a C4 rim on a 6.5AL Cup. I tried on in college, and I'm still looking for one for quick doubling. They are not made anymore, as far as I know...

That said, you might like the Bach 4 as an inexpensive, not over-large mouthpiece which works well with this Jupiter. The Jupiter 5GB it came with is also a good match. I know someone who also like the Bach 4 Megatone, but I find it a little stiff in the upper range...

All this said, my mouthpiece is a Perantucci 2A (for my Yamaha 321) and it works equally well on the Jupiters. Truly, tubists need to remember that the top end of the euph is the important end, not the low range (same rule applies to bass trombone!). The 2A is very deep, but with a 7-ish rim. I love it. Mine is getting quite well-worn

J.c.

A Schilke tenor trombone 50 works very well with this particular model. Yes, it is a tad smaller than the 51D all the way around, but it still has a good deep funnel cup, and a good throat and backbore, and matches the smaller bore valve block of this horn better, with good smooth intonation and consistency and no real problem notes. A friend of mine uses this combination for community band.