Those are Nervex Super Legere series. The frame was possibly a custom ordered Paramount... That was right about the time when Paramounts were coming with the uglier lugs (Prugnat?- I forgot), so I'd guess it was either a custom, or Schwinn got in a batch of the Super Legere, and used them for a while. Supposedly, the Paramount builders were growing tired of all the lug filing they had to do on the Nervex Pro series, so for a while around '67-'68 were using other lugs.