Collaboration model

A collaboration model is a Spyderco model which is a collaboration between a custom knife maker and Spyderco. Spyderco invites a custom maker to colaborate on a design and then Spyderco will produce that knife. The first collaboration model was the C15 Bob Terzuola. The complete list of collaboration models to this day:

• C15 Bob Terzuola
• C19 Bob Terzuola Jr.