| Even though the bell numbers weren't always stamped on the Mt. Vernons, that doesn't mean that certain bell sizes weren't used. For example, I have a Mt. Vernon from 1956. ML is stamped on the valve casing, but the bell isn't stamped with a number. I know that the horn has a 43 bell since I got a hold of the instrument's shop card (photocopy) from the factory. I don't know why the bells weren't always stamped, though. |