It's a Spyderco Endura 4 where I have re-ground the spine to have a false edge.
It was done by hand, no jigs involved! I did play around with a jig on a practice piece but it didn't seem right in the end so just went for it by hand.
This is how it looked originally.
As you can see the profile was changed slightly as well to make it more pointy.
This is currently available for sale. The cutting edge has never been used or sharpened.
Cost is £75 which includes shipping in the UK. Overseas postage is fine but will cost extra just to cover associated costs.