Another scarce silver by William Spratling, an American born designer who established a workshop at Taxco, Mexico. A tortoise cabochon mounted on the silver is held by four prongs. There is one wee nick in the tortoise near one of the prongs. On the reverse is the script circle backmark WILLIAM SPRATLING TAXCO MEXICO and eagle #30 mark. Loop shank. Est. selling price is $100-200.