I am also a huge fan of these knives and I have more of them than any other knife pattern. They made them in 3 sizes: 200, 250, and 300 and in three configurations "A" for single locking blade, "B" for two blades and the secondary might be a sheepsfoot or a pen like the one above, and "C" for three blades which had the drop point main blade, a sheepsfoot secondary on the same pivot as the main, and the third blade was a pen on the butt like the 250B above. Besides cocobolo, they used walnut (I have an "Ezra Brooks" with walnut; at least I think it's walnut), white pearl, black pearl, abalone (on the 200A), black micarta on the Haley's comet edition, and green checkered kraton on the 250 and 300 sizes, and white micarta (I think it's micarta) on the scrimmed versions. I have a SFO with stag and one with smooth bone. Here's a couple of photos I have available:
Great knives! I just bought one similar to the bottom knife above.
and here is a 250C, wood:
I just remembered that they also offered at least one A model with stainless handles; I don't have one of those. And they made at least one model with full length wood scales with metal liners; I don't have one of those either. I may try to get some of the ones that I haven't photographed out and make pictures of them, but you've already seen the big majority.
Ed J