I don't know where to get an older Sharpfinger, but I do know where you can get a similar size and shape blade, but in cryogenically treated 440C stainless insteadof carbon steel. Just put on your own handle and make a sheath for it.Knifemaker's Supply:
www.texasknife.com
They call it the Vented Skinner
Edit: That's TEXAS Knifemaker's Supply. The ol' brain called in sick today. LOL [&:]