Interesting concept! Later models 36B at least and later do have the trigger on first. What are the mouthpieces are used? If you are looking for a heavyweight trumpet with a sound that's on the dark side, the Conn Connstellation trumpet should be right up your alley. Texas, by way of Germany and Hawaii Posted: Undercut slides.
Conn Connstellation Trumpet Review
This IMO really helps the high register a lot. These reviews are very important for me I'm sure it'll easily survive another 41 years. Does this suggest that the 38B is a trumpet version of the 28A long cornet? The Conn Connstellation trumpet receives rave reviews and feedback from players of this horn. Good information.