Boy with a Lute
Frans Hals · ca. 1625 · Oil on canvas

The Fingernail Test is an oil-on-canvas Dutch Golden Age painting that has been attributed to either Frans Hals or Judith Leyster, painted in 1626 and now in the Metropolitan Museum of Art, New York City.
Image courtesy of The Metropolitan Museum of Art.
Available as a made-to-order museum-quality canvas print: stretched or framed.