The seller says he had the bell swaped and thinks it is an old Cerveny but when you look at the valve caps I see a screw. As far as I know only Mira uses this
Also the thumbring and lyre holder screams Miraphone
In addition to the valve caps, look at the design of the nickel ferrules, the dog leg from the valve block to the main tuning slide, the general wrap and other aesthetics. They are all consistent with Miraphone. You can look up my threads on my "Bessophone," where I also changed out the bell on the 186 I used to have for a Besson 17-inch New Standard BBb bell. It was shorter, so I had to extend the main tuning slide. Through the years, some changes have been made to the 186 generally, but these details have stayed the same. In a word, Miraphone.
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