"While this test doesn't simulate any logical use of a knife as a tool, since it was a concern of some of our customers, we began incorporating it into our testing protocols." - Michael Janich
My Rex45 Para 3 has developed a really nice subtle patina just from the oils in my skin. I'll try to catch it in a photo but it's hard to get the right lighting. From some angles it still looks perfectly silver, and from other it has deep coppers and blues. It started around the spydiehole and has spread from there. Love this steel, least of all for it's appearance, and I really love the way it looks.
"While this test doesn't simulate any logical use of a knife as a tool, since it was a concern of some of our customers, we began incorporating it into our testing protocols." - Michael Janich
Honestly just daily use. The patina around the spydie hole is from the oils in my thumb opening and closing the knife. Its absolutely my favorite knife in my limited collection. That being said im a user not a collector.