Dug these three Kabar folder up.

[shootz]

I had to clean'em up a bit. I ordered them right from Kabar in the 80's. They weren't expensive. Three lockbacks. Can you see the lever?

 

[ferguson]

Those are really pretty classic looking knives. Quite refreshing.

Steve

 

[Keith Montgomery]

Very nice lines on those knives. The rear bolster appears to be the lever.

 

[shootz]

Kieth you got it. They're lockbacks. The rear bolster is the lever.