"Henry Bone RA (6 February 1755 – 17 December 1834) was an English enamel painter who was officially employed in that capacity by three successive monarchs, George III, George IV and William IV. In his early career he worked as a porcelain and jewelry painter. He was elected a Royal Academician and produced the largest enamel paintings ever seen up to that time." - (Wikipedia (en) 27.11.2021)
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