About 20 years ago, the gentleman that manufactured those, always had a booth at the Holt Road Gun Show in Indianapolis. I believe he was a toolmaker from Bedford who worked at Ford. The workmanship was beautiful and I always wanted one. I believe the cost new in 1985 was about $400 depending upon handle material and weather you wanted a damascus blade (Extra). You have the stag handle and the damascus (pattern welded) blade; absolutely the top of the heap. Congratulations, I'm jealous, but pleased that someone else got to buy one.
Like an antique, the more documentation you can locate, the higher the value. The gentleman was in his early 50's when I last spoke with him; that's been almost 25 years, so I'll assume he's retired. Hope this helps. I would say value right now $600-$700. Any documentation you can find will only add to the value at sale. If yours is a metalic cartridge .22, better yet, The only ones I saw were blackpowder, fired the same mini balls as the North American Arms mini revolver.