Schwinn never took advantage of their position in the early mountain bike market.  Most of the early mountain bikes were based on the early Schwinn balloon-tire bikes from the 1930's and 1940's.  This was their attempt at a mountain bike.  Remember that this was the first year of the Specialized Stumpjumper and Schwinn was offering a Varsity frame (looks like filet brazed but it is Electro-Forged) with BMX parts.  It took them several years to realize that mountain bikes weren't going away and make a more serious off-road bike.  The King Sting was the top offering from Schwinn with a cro-moly frame.  This bike was purchased from the original owner who had modified it through the years.  Cantilever brakes mounts were added, Stumpjumper fork, Avocet 3 piece crank, Campy seat post........really isn't much original from Schwinn except for the wheels and frame.  If anyone know of a decal source, please let me know.