I appreciate the reply. My interest isn't so much in the process of knife filework, which I'm generally familiar with, having collected custom knifes for several decades. My interest is in what sort of special orders the Buck factory was willing to accommodate in years past. Is there any reason to think that the filework on this Buck 105 of mine (a pre-1986 tang stamp) was not "aftermarket" but actually factory produced. I've never seen a buck with file checkering on the pommel but I'm no Buck expert either. If no one on this forum has ever seen this before, then I'll just assume the factory had nothing to do with it. Thanks.