Yamaha 57 mouthpiece

[vintage88h]

Does anybody know the specs of the Yamaha 57 mouthpiece??

I think its a small bass piece. Not longer produced.

[Danitrb]

Should be equivalent of new 55L, so 3G rim and deep cup.

[vintage88h]

Thanks. This helps a lot

[Posaunus]

I actually have had 2 Yamaha 57 mouthpieces - the older one is larger; the newer is smaller (more like a 6-1/2 AL?).
Both "out of print," I think.
I have specs at home - will check later.