Ouch: You have no idea how long I've been searching for that same fountain of information. But first let me rephrase my original statement. PC made production bali's will most usually have the Pat. Pend. info stamped on the tang with the Butterfly log on the reverse. I believe there was a legal issue with the Patents once PC went belly up, but I never got confirmation from Reberta or Les (and at the time, it would have been too sensitive a topic to bring up.) The PC part were usually etched on the blade, typically on the blade (as in the International Series).... I have only seen a few stamped with Pacific Cutlery, and now I'm not sure if they were on the customs or production balis'....
Sorry about the confusion. I posted a similar question a while back, and got noe response. But I blame myself for limiting the topic to custom BM balis. But if you like, I'm sure we, as a group, should be able to come up with a concensus for the FAQ....