We're just about sold out on the second generation (now offering euro shank as an option, as well as threaded for your personal rim) of the OG Ultimate silver plated brass mouthpieces.
These are superb contrabass or large E-flat tuba mouthpieces, ๐ผ๐๐๐๐ฟ๐๐๐ features such as oversized dimensions (such as oversized throats, rim widths, and cup depths - which often seem to cause more problems than they may seem to solve).
It's really the perfect balance for the 6/4 size tubas - whereby players are often seeking more definition while preserving the breadth of tone offered by such instruments.
The ๐ผ๐ป๐ฒ-๐ฝ๐ถ๐ฒ๐ฐ๐ฒ ๐ฐ๐ผ๐บ๐ฝ๐น๐ฒ๐๐ฒ ๐บ๐ผ๐๐๐ต๐ฝ๐ถ๐ฒ๐ฐ๐ฒ ๐ถ๐ $๐ญ๐ณ๐ฑ plus postage and the ๐๐ต๐ฟ๐ฒ๐ฎ๐ฑ๐ฒ๐ฑ ๐ณ๐ผ๐ฟ ๐ฟ๐ถ๐บ๐ (fits all Sellmansberger stainless steel rims) version ๐ถ๐ $๐ญ๐ฑ๐ฌ plus postage.
Again, they've really sold quickly, and we are currently down to 2 standard shank, 3 euro shank, and one threaded-for-rims euro shank.
The next batch is in queue, but our machine shop (just as before) has quite a few jobs ahead of ours, and plating is yet another couple of weeks, so these few shown are available immediately for those who order now.
You are welcome to trial one of these for a few days without a restocking charge if you're particularly gentle with the shank (actually, Dollar General sells some really thin typing paper...
but true), and are willing to cover the round trip postage if you return it.
but true), and are willing to cover the round trip postage if you return it. 
)