Hello SeverGuy, and welcome!
I'm not sure I follow your question. It sounds like you know what the knife is.
All I can add is it is most likely made in China, It is a similar design to an older Spyderco Civilian.
I think you might have read a typo too.
4" closed, Eagle, Lockback knife This is just a guess tho.
Eagle knives are a non brand really. That knife has lots of brand names including Mtech, Eagle Eye, Rite Edge, Frost Cutlery, ect...
WTB Kershaw 2120 MACHO Lockback Parts knife
I need a pile side scale. THX!