The use of enamelled coins in fashion jewellery was revived in about 1884 in a modest way by William Henry Probert who was employed as a jeweller’s painter in Birmingham. Probert confined his palate to two or three primary colours and specialised in larger coins such as the crown featuring Pistruccis’ splendid St George and the Dragon. He built up a considerable business supplying jewellery businesses with enamelled coins up to 1892, though he continued business until 1902. (from James Mackay’s Encyclopedia of small antiques, a wonderfully researched book filled with history and info).