Many years ago, a colleague of mine gave me his Pan American(subsidiary of Conn) cornet manufactured in 1953. It came with the EZ-TONE mouthpiece, the short shank mouthpiece you are probably referring to. My understanding is that Conn Design cornets made before 1958 should be played with this mouthpiece.

I cannot figure out their specs. I am used to the Bach nomenclature such as 3C, 5C, 7C, etc. When I tried to contact them, I got no response.

Does anybody have information or experience with Stagg cornets? I am looking at the student model WS-CR215. It appears to be dirt cheap compared to other low cost student models. I cannot find any reviews on this item.