That is correct; Mickey Finn/Phrobis made the 186 prototypes. Leroy tells me he made 10 of these "prototypes". I could have merely assumed that they were 186 prototypes and not 560 prototypes. I don't remember being specific with model number in our conversation, only described the knife to him as a 186/560. Either could make sense: The 186 is a screw together design, but the 560 has no belt clip.
It would make more sense as a 560 the more I think about it. Phrobis owned the 186, and Buck had to solve a user issue without any contract issues.
Can you expand on “had to solve a user issue without any contract issues”?
I'll try to catch up with Leroy again this week and nail it all down. If anyone else has any definitive information, I'd love to hear it and see more examples.
There's another thread here on a similar one, but nothing concrete.
https://www.bladeforums.com/threads/all-stainless-buck-186.1085560/