Gold, Silver, Red Guilloche Enamel and Diamond Box. Photo: Courtesy Doyle New York 

The ornate red guilloche enamel box centering an oval oxidized gold panel with a diamond-set crest, topped by a crown, edged and decorated with stylized oxidized gold scrollwork, the sides surmounted by elaborate gold scrollwork, with diamond thumbpiece, the whole set with 162 round diamonds approximately 6.40 cts., the reverse enhanced by wavy engine-turned engraving, approximately 335 dwt. 2 11/16 x 4 1/8 x 1 1/2 inches. Estimate $10,000-15,000

Doyle New York. Important Estate Jewelry - Wednesday, September 21, 2011 at 10am. www.doylenewyork.com