The 18th century produced a great number of miniature painters, of whom Richard Cosway (1742–1821) is the most famous. His works are of great beauty, and executed with a dash and brilliance which no other artist equalled. His best work was done about 1799. His portraits are generally on ivory, although occasionally he worked on paper or vellum, and he produced a great many full-length pencil drawings on paper, in which he slightly tinted the faces and hands, and these he called "stayned drawings". Cosway's finest miniatures are signed on the back; there is but one genuine signed on the face; very few bear even his initials on the front.