I also do not know that Gene's numbers have any descriptive meaning....I got these images from him today....I have a wharncliffe almost like these in elk antler and S30V, and I was tempted by both...fortunately the ivory one was made for a client and the stag bone was sold before I got to work....
Elephant Ivory
Stag Bone, this one was listed as available this morning...he generally has about one knife a week as available...probably a good thing for my wallet that I was late to work
That #12 available with the oversized hole has my eye...so much I could braid given that generous lanyard hole....my-o-my....