I have an Imperial Frontier lock back folding hunter with a number on the tang: 4815 U. I have a box for a Frontier 4815 S. What was this designation for? I can imagine that the S is for stainless steel, but haven't come up with anything for the U. I am thinking of selling the knife - it is part of a collection that my father-in-law had. It is great when we can find a box to match the knife, but this seems like a pretty big faux pas to put this knife in this box. May have sold the one that belonged in the box when I was still trying to figure this big collection out!
Would appreciate some seasoned advice!
The earth is one country and mankind its citizens. - Baha'u'llah 1863