Arthur Roy Brown
Look Ma, No Hands!
The color, geometry and fork lend to the very likely possibility that it's one of the elusive Japanese-Made Schwinn All Terrain Framesets that were sold as a frame/fork only by Schwinn dealers. When ordered, the buyer had the opportunity to put a custom spec on them through the dealer, or build them up themselves with parts purchased elsewhere. The frameset I am in posession of was purchased by my eldest brother in 1985 and the date code in the serial number indicates it was fabricated in 1984. I have all of the parts he specced, except the tires/tubes and everything is restorable.