I recently picked up a model 770 Osborne in green/black G10. The blade is marked as a prototype, 2003, in D2 steel, and came in a nice presentation case. This model is discontinued, and I don't see where it ever made it into full production in a D2 blade. It is a nice, small EDC pocket carry axis lock, and very smooth. My question is- is it collectible? I have been resisting the urge to carry it. Are prototypes good or bad? Stop me before I open a box.