G'day Dave, I guess where I was coming from was, we have previously ascertained in this thread that the first Million numerically numbered,were produced by early 1980 when Schrade then commenced Alpha numbering A-Z at 99,999 each alpha number series..<during that time they also changed from 4 pin to 3 pin>...with there being 26 letters in the alphabet and with your number being AA65958,then it would mean by only 1983, Schrade had used/manufactured all the Alpha numbers representing 2,600,000 LB7's plus the initial Numerical Million to 1980 plus another AA 60,000....and yet as in your 3 pin package they were still in 1983 only using your early black sheath plus the Uncle Henry White box after manufacturing some 3,060,000 LB7's...I need to do more homework obviously, however I believe there may be later dated <than 1983> LB7's that were still in the original A-Z alpha series...bearing in mind I believe many later serial numbered had the Uncle Henry tang signature as well.......to sum up if your 1983 time frame was correct every 4 pin plus any 3 pin A to Z would have had to be manufactured prior to 1983...does this LB7 thread reporting with known dates of ownership/new purchase bear that out?...hmmmm......Hoo Roo.