All About Pocket Knives

Hey guys been awhile again but need some help. Been all over online any my Goins and another book and can’t find this stamp. I included two similar but this one is different. The top of the k sweeps downward at the top.

I don’t know how long I’ve had it. A fairy long time. An ez open swell end jack. Bone is worn pretty bad. Trying to figure out its age.

Thanks.

Can't help you but that is a sweet old knife.

Thanks for the comment. It’s as tight and snappy as the day it was made. But the stamps driving me nuts.