that knife was made in 1993, so 420hc steel most likely. same as current production 692. current ones sell for around 75 bucks new and unused with factory sheath and boxes etc.
not sure how much value is in the 90s era 692s/192s post 425m steel. Ebay auctions should give you a good idear to ranges they sell at. a factory sheath is easy to get for around 18 bucks at Bucks website, if someone wanted one.
hope that's helpful....