Marc Muller custom built a Single Top Tube Elite Mixte for wife back in 1980 when Schwinn had the "anything you want" custom build available. I just preferred the single top tube.

from below link ".....When Ed Schwinn took over the company in 1979, one of the first things he did was to shut down Paramount production. If it couldn’t be a world-class bike then don’t make one until it could.

Marc was put in charge of re-building Paramount – almost from scratch. He started out by retooling the department including a new brazing fixture and alignment table. In June of ’80, the company decided it needed the Paramount back but that they would have to move out of the Chicago factory. Marc’s first bikes were built for Eric Heiden and the 7/11 team in 1980.That year, Schwinn brought back the Paramount as a super-custom bike – “anything you want” for the then outrageous sum of $3,000. These became known as the “Elite” Paramounts........"

Paramounts in Waterford 1980-1994