I'm curious if anybody can tell me if this knife is worth anything or is sought after by collectors. It's an Applegate-Fairbairn by Ace Knives which I understand is now out of Business. It has the Signatures of Applegate and Fairbairn reproduced on the Blade and it is Serial Numbered 1000. When I got it back in the 1990's I was told there would only be 1500 made and I just happened to get 1000. Anybody familar with them?