In the back of the Advanced Balisong Manual they mention some similiar to those.They were those that didn't meet Pacific Cutlery's high standards.They were engraved with a "2" on them so that people couldn't return them for warranty work,since the tips were taken off and the edge flattened.Usually,P.C. would've given the owner of a knife a new one if it had been damaged this much...therefore the "2" was put on them.
They were sold for a while as practice knives,but P.C. finally discontinued them.
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*The* Lunatic Puppy
It wasn't me...It was my *good* twin..
My "inner puppy" made me do it..