I found a Schwinn lugged frame in the scrap-pile that had been re-painted in a probable attempt to disguise its stolen past. It looks like the japanese-made Tempo/Prelude series made with Tenax as a bit of the Columbus decal was still attached. However, the small round headbadge is red and black, styled exactly like the 70's Paramounts (though a little larger) and says Schwinn above and Chicago below, and attached with screws. All the Schwinn japanese frames I've seen from this 70-80's era say Schwinn Approved, Japan and attach with rivets. Did Schwinn make a lugged frame in Chicago (other than Paramount ilk) or put a Chicago badge on an imported frame using screws? The badge is also stamped with numbers like the Approved-Japan badges are.
Jack Romans
Sacramento, Calif