David Webb. An Enamel, Gold and Ruby Frog Brooch. Photo Philips de Pury & Company

Designed as a green enamel frog, with polished gold feet, accented by cabochon ruby eyes, mounted in 18K yellow gold, length 1 1/2 inches.  Signed 'Webb' for David Webb. ESTIMATE $4,000-6,000. SOLD AT $6,000

Philips de Pury & Company. Jewels. New York. 6 december 2011 www.phillipsdepury.com