Looks like an early knife. I don't see any problems based on photos of just half a knife.
Somebody, however, for whatever reason, has ground down the kick on the master blade's tang. I assume the pen blade was not similarly treated.
What we have to decide is for what reason might somebody have done that?
Was the tip of the blade resting above the tang and catching in his pants pocket?
DE OPPRESSO LIBER
"...Men may spurn our appeals, reject our message, oppose our arguments, despise our persons ___but they are helpless against our prayers. "