Legitimacy of empire is projected to a people through objects of all kinds, both rare and commonplace. Within daily life, subtle reminders of the power and authority of empire are seen through material goods: the faces of high ranking Byzantine officials, the history of a man depicted in a candlestick holder, or a stamp on the Aurelian wall all provide constant reminders of the control empire has on the mundane. The likeness of an official on a steelyard weight and the images of emperor on a coin conferred approval of the empire providing credibility to traders. Additionally these images served to reinforce the authority of state officials. Furthermore, when an emperor announces his deeds, as in the case of the brick stamp, he is telling the world he has created an everlasting memorial to his greatness. This permanency is also seen in the case of the ivory diptych announcing the consulship of Justinian. By writing on an expensive material, Justinian has proved not only that he has wealth and control over valuable substances, but also that his position is valuable. Viking law provided legitimacy to a simple, steel key by imposing greater consequences for theft from locked spaces versus unlocked. Validity within an empire can be seen through material objects, ranging from the face of an emperor on a coin to the translation of a medical text. Each of these objects supports the legitimacy of empire by inserting themselves into the daily lives of imperial subjects.