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Greetings

I have an umarked tuba MP that came with a Conn 15j. The seller said the horn had been used by his son in high school. So it may be a "student" model.

I compared it with a couple of other MPs in my possession ....

Cup I.D. Throat
Bach 18 31.9mm 7.9mm
Benge 24AW 31 mm 8.3mm
?? 31.5 mm 6.9mm

Cup depth and shape are similar, as far as I tell. But, as you can see, it has a small throat.

The Benge copies the decorative turning between the cup and the shank of the Bach. Is this common with clones?. If it is a clue, the mystery MP appears to match Yamaha MP design.

Maybe someday, someone will be so smitten with my velvety tones they will ask, "what mouthpiece do use?". Not likely, but I would like to be able to give them an answer.

thanks

Based on your post, it could be compared to , well, who knows what! Maybe some relevant detail and/or pics would help. "But, as you can see, it has a small throat." It is invisible in your post - at least to me.

I posted relevant details in the form of a table in the form of a table with cup diameter and throat size size measurements of two common MPs and the mystery clone. Thats what I was referring to when I said "As you can see.." Apparently, when I hit "post" the extra spaces I typed that would've made a readable table were ignored by the board's system resulting in the jumble of type seen above. I apologize for the confusion.

Here is a photo of the Bach 18, Benge 24AW and the mystery clone.