Mr M.
It is Ken Eversull, and he has the trigger components, and the skill set to apply them where possible (sidelock gun configuration) The Fabbri trigger is identifiable INSIDE the gun, not by any visible external appearance of the blade or any markings.
The craftsman is HIGHLY SKILLED and priced higher than many surgeons, but then again there are a lot of Surgeons relative to the total population, and .....only one of him.
Be prepared for some degree of sticker shock......