Glad you've found it interesting.
The instrument is for Charlie Borzillire, in Western NY. He was a fixture in that regional music scene for many years, until being sidelined by a stroke in 2004.
I probably should have posted something when I completed the first horn I worked on for him. That one was an early Bundy Tenor, with limited modifications to give him range down to E with the left hand. You'll find some pictures of it
here: The last picture in that set shows him playing that instrument in a New Horizon's Band. You can hear his first public performance on it
here: He is really looking forward to the completion of the job on his Mk6, and I am happy to have been able to do the work for him.
Brian Russell
PS: To answer a couple questions: I'm a repair tech located in Winneconne, WI. Posting the pictures of what I'm doing is as close to making 'plans' available as I can do. It is one-of-a-kind, custom work. I am hopeful that putting it out there as I have will help others who might need to do something similar.