Here we see a stark reproduction of the skeleton form the tomb of René de Châlon (1519-1544) displayed in the National Museum of French Monuments. The original, pictured below, can be seen at the Church of Saint-Etienne, Bar-Le-Duc, France.
A warrior prince in the service of the Holy Roman Emperor Charles V, René de Châlon died in the siege of St. Dizier in 1544. Beyond a few genealogical details, little else in this prince of Orange's life seems notable -- except his incredible tomb. The haunting skeletal statue is generally credited to famed French sculptor Ligier Richier (1500-1567), but there's no documentation to back this up.
Could you ask for a more beautiful image of flesh slouching off the bone? Rather than an impression of rotting, we get the sense of cloth peeling away from true skin and dead leaves turned to dust in the breeze. While the elements of memento mori are unavoidable, there's a sense of the natural in this portrayal of mortality -- as well as a suggestion of rebirth.