The Noblet Laureate is basically the same as Leblanc's top of the line models.
The Leblanc models that have the polycylindrical bore technology influenced by Tom Ridenour are
Leblanc lists all of the above as having a 14.60mm bore. In one brochure the V40 is listed as 14.85mm.
Noblet instruments that I am told are the same basic instrument are
I measure the Laureate as 15.00 at the top left hand joint and 14.6 at the middle, or the end of the same joint.
Unfortunately, I didn't take a picture of this instrument. This was a newer Laureate, and I don't remember it having the fancy engraved bell of the older model reviewed here.