One of the early Grand Presidents of the Society was Stephen Theodore Janssen, proprietor of the Battersea enamel works in London. Janssen had perfected the technique of applying transfer-printed decoration to a white enamel ground, and operated the enamel works at York House in Battersea, from 1753 to 1756. The Battersea factory produced a wide variety of boxes and other small items, often known as 'toys'.
This is the only surviving Grand President's Badge, and certainly the most ornate of the many enamelled badges and boxes produced for the Society. It is equally remarkable as a rare survival of a piece of jewellery in the Rococo style, with its border of rock-crystals in a silver setting of asymmetrical scrolls and curves (see reverse). The row of ships along the top bear no relation to the Society's arms and may have been added for another early Grand President, Admiral Vernon (1684-1757) a great English naval hero.