I have up for sale or trade a 1 off tanic the only collab done to my knowledge. The knife was sold at the east coast custom knife show for 1600. I purchased it from the original owner. Neither of us have used it. The knife has gray's killer grind and finish on the frame of geoffs tanic. Pictures will be up soon for questions please email me at rbayhurst@gmail.com asking 1375 as far as trades looking for hobacks, direware or dalibors. Thanks for looking rich