A monumental Italian Silver-gilt and gem-set figure of Queen Elizabeth II in Coronation Robes, Renato Signorini, 1953-56

the Queen shown seated, her skirt decorated with emblems of the British Isles, including Tudor roses, shamrocks and thistles, highlighted by pearls and rubies, the crown, orb, scepter, and collar of the Garter all further decorated with stones

London, O'Hana Gallery, 1956.  Priceless.
New York, Tiffany & Co., 1956 (probably)

one pearl missing from pendant to Garter, otherwise good condition, impressive size
In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective qualified opinion.
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Renato Signorini (1908-99) was a sculptor and mosiac artist who taught at the Fine Arts Academy of Ravenna.  This sculpture of the newly-crowned Queen Elizabeth II was the highlight of his exhibition at the O'Hana Gallery in London in 1956.  This was recorded in a Pathé newsreal, which noted that the sculpture was "made of silver 1/4 inch think, covered in a layer of gold 1/8 inch thick, and set with 103 emeralds, sapphires, pearls, rubies, and lapis-lazuli... even melted down, it would be worth more than £6,000."  The figure of the Queen was probably included in his one-man show of 45 works at Tiffany's, New York in October of that year, which displayed Signorini's gold and silver sculptures of Audrey Hepburn and Pope Pius XII.