Below is a recent paper on effigies and some ideas on their relationship to a larger understanding of art:
The Everlasting: Art, Death, and Permanence
The effigy is a kind of image that persists through human history. It takes on a variety of forms depending on the culture being examined. These forms may be tombs, shrines, small coins, or miniature sculptures to name a few. Despite the variety, the basic function of effigies remains the same: to memorialize and immortalize the existence of an individual – an existence limited by the corporeal body, but extended by the effigy.