Pair of Medieval Andiron or Firedogs c.1500A pair of striking wrought iron Medieval Andiron or firedogs on which logs are laid for burning in an open fire place. This particular pair feature an unusually shaped finial in the form of a cuboctahedron (exacedron abscisus vacuus). In 1498 Leonardo da Vinci illustrated the cuboctahedron (exacedron abscisus vacuus) for Luca Pacioli's book 'De Divina Proportione'. Paciolis book on the Divine Proportion, talked of the idea of the golden ratio of