For years now I've carried a Benchmade 520 " Presidio"
Interesting story, 2008 SHOT show I was talking with the Benchmade guys, and they told me that I had one of the OOPS knives that made it out the door with the wrong blade cut.
The knife is discontinued now, but when it was made it should have a Sabre grind blade (bevel on both sides example #3) and mine has a chisel grind (bevel on one side example #4 )
Benchmade said "retire it - it's a rare knife that makes it out incorrect" But I love it so much that I just can't get my self to let it go.
My only issue is the reliefs in the scales, they are cut Aluminum and they grip like a mad crocodile in my hand, but inserting and removing from my pants is dismal, it's like a saw blade going in and out and destroys the lip of my pockets in less than 6 - 9 months.
The price you pay for the knife you love.
![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4c/Ground_blade_shapes.png/160px-Ground_blade_shapes.png)
![](https://dstactical.com/images/525.jpg)