From the article:
The name of the artist, of whose works only about a dozen survive, is lost to history, but scholars speak of the Claude Master, because of the quality of this, his greatest work. His palette tends toward soft roses and mauves—in an image of the Virgin’s coronation, Christ and his mother wear matching amethyst-colored gowns, trimmed in gold—and the brushwork is stippled, as if it were the effort of a mouse-size Seurat.
An online exhibition is available on the Morgan Library website: http://www.themorgan.org/exhibitions/exhibition.asp?id=9
