A few examples of appraisal values for
RONDELAY

• Michael and Frances Higgins.
  Michael and Frances Higgins. Collection of four rondelays. 1970, fused glass. 28 h × 28 w in. result: $378. estimate: $300–500. Collection is comprised of two square rondelays measuring 8.25 square inches and two circular rondelays measuring 8.25 diameter inches.
• FRANCES & MICHAEL HIGGINS FIVE
  FRANCES & MICHAEL HIGGINS FIVE RONDELAYSMichael Higgins (1908-1999) & Frances Higgins (1912-2004) Five Rondelays Glass Each 11 1/2" diameter (60" high as arranged) Condition One of the Rondelays has a crack repaired with epoxy (the fourth from the top as photographed). A few minor chips around hardware.
• Michael Higgins & Frances
  Michael Higgins & Frances Higgins (1908-1999 | 1912-2004) Rondelays, Set of Thirty-NineHiggins Studio, USA fused glass, brass one example signed 'Higgins' 5 1/2 x 5 1/2 inches
• Royal Doulton Rondelay Two Trays
  Royal Doulton Rondelay Two Trays comprising Dinner Plates Small Tea Pot Tureens Bread and Butter Cups and Saucers Side Plates Cream and Sugar (47)