Its also known as the Model 185, BuckMaster LT, and from PHROBIS the Utility-Master. Made from Jan 1986 till Oct 1989 but ALL were stamped with the 1986 date code stamp the same one that is on your blade. Only 6038 est. were made. All of the Factory Blades were media blasted like yours. The value has always been low and for the life of me I cant figure that out especially since the BuckMaster 184 had over 100,000 made and only 6038 of this model. Maybe one day the value of this knife will hit the market as it should. Hope this helps.