I've seen this before when comparing pictures of different knives within the same pattern, and recently noticed it when looking at my Esquires: The navy blue Esquire has 4 micarta pins, the oreo Esquire 5. See? The Oreo has a Peekin' Pin when sheathed (this is what caught my eye-- I initially missed it in the Oreo's sale pictures, when the knives were first together nekkid, etc.): Do most FF knives have 4, or 5, and does it depend on the pattern size, or whimsey, or...? Thx. ~ P.