First is a knife that my grandma got from somewhere and gave me years ago. I don't carry it and it's sat with the rest of my collection for a long time. I tried to research the coins and markings at one point just to find some history but came up short. Anyway the blade pivots open by gripping the coins and spinning it around. The second came from an indian knife maker in Arizona. My mom bought it as a birthday gift. I really love the look and colors and while I'll likely never put it to use I enjoy having it in my collection.