The brooch modelled as a frog poising on a lotus leaf, the frog embellished with brilliant-cut diamonds, accented by circular-cut emerald-set eyes, the lotus leaf decorated with green enamel and brilliant-cut diamonds, the diamonds together weighing approximately 1.05 carats, pendant fitting, mounted in 18 karat yellow gold, signed.
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WALTHAM
In 1850, Aaron Lufkin Dennison founded Waltham in Roxbury, Massachusetts, with David Davis and Edward Howard. This was the first industrial mechanical watch and clock manufacturer in the world. They aimed to manufacture high quality watches at a lower cost using interchangeable parts.
After numerous failures, Howard and Dennison eventually perfected and patented their precision watch making machines years later, creating what has been called the American System of Watch Manufacturing. The company pioneered the method of mass production with using interchangeable parts, transforming the watches industry profoundly.
Over a century, Waltham created more than 40 million watches. Nowadays, collectors around the world still seek Waltham’s high-precision watch and jewellery.