By 1802 Robert Garrard was in sole control of the firm of John Wakelin and William Taylor that he had bought into on the latter ’ s death in 1792 . Later , with his sons the firm became R . J & S . Garrard and then later still R . & S . Garrard . In 1843 Garrard was appointed Crown Jeweller to Queen Victoria and became responsible for the upkeep of the Crown Jewels . In 1848 the firm produced the America ’ s Cup , the oldest international sporting trophy .
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