The 10" plates on this page were decorated with patterns that did not go into production and range from 1960 to 1965. Most of them are on the Rhythm coupe shape, though a small batch is shown at the bottom on Cavalier.
Had these samples been accepted, they would have paired up with hollowware shapes such as Orbit, Vogue, or Duratone. Others like the stencil/spray patterns most likely would have picked up hollowware from already existing shapes like Triumph and Charm House in the same manner as the Serenade lines.
All of the plates shown are from the collection of The Fiesta® Tableware Company.