John Stork is the one who made Miles' Giardinelli mouthpieces. At that time, John was the mouthpiece maker at Giardinelli's before he relocated to Vermont to start his own custom mouthpiece business.
Pretty darn cool find there!!! The Martin-Committee Miles used was the #3 large bore. He had one as did Freddie Hubbard and even Maynard Ferguson played one from 1953-1954. Dizzy, Conte Candoli, Ernie Royal, Lee Morgan, Bob McCoy all played the 2b medium bore model. Renold Schilke was a collaborator on the design of the old Martin's and if you asked Mr. Schilke, he would say "The Martin's were designed by a committee of one...ME!"
They're amazing horns for sure. Miles actually used a #2 bore (like this horn). Wallace Roney used a #3. Interestingly, as Jim said in the other video, the BELL is really the difference between the instruments.
I have a real commiitte not an RMC, it does have a distinct mellow sound compared with other trumpets but It's not about the machine, it's about the player.
