Meisterlin applies to the dexter side the term Field of Swabia, which we only mention here because it is still occasionally employed. He gives the same name to the district in which Nuremberg lies (apparently by confusion with the "Gau" of Sualafeld). Nuremberg has accordingly nothing to do with Swabia, as was probably inferred centuries ago. The origin of the arms is obscure. It is however worth mentioning that the Burggraves of Nuremberg bore this "Field of Swabia" as a bordure on their arms. These arms, as we said before, have been used since the second half of the fourteenth century as the counter-seal of the city seal above mentioned, as also on stamped parchment and stamped paper (only introduced towards the end of the seventeenth century), on coins struck at Nuremberg, on public buildings, etc. The human head on the eagle of the privy seal, afterwards called the "Eagle-Maiden," is explained by Mummenhoff as the face of an emperor with long flowing locks and the Imperial crown on his head. It retains this character throughout the Middle Ages both on the seal, and also when the seal was used as a coat-of-arms. Mummenhoff instances in particular the fine eagle on the town side of the upper story of the Thiergärtner-Gate-Tower. With Albert Durer, however, begins the quite unhistorical transfiguration of this eagle. The emperor's face was no longer understood and was mistaken for a female face; and thus in course of time a series of unjustifiable embellishments produced a coat-of-arms bearing a maiden, described by even a modern historian as an "Eagle-Maiden." In quite recent times a mural crown has been set upon her head. We will pass over the jesting explanations formerly given for this seeming Eagle-Maiden, which would be untenable, were they even serious. We need only mention that when the arms are set out in colours the eagle is Or and the field Azure (and very often Vert). These three coats-of-arms (counting the seals as coats) arranged in different ways were employed on public monuments, buildings and coins, and afterwards on all publications, commissions, ordinances, etc., issued by the Council. Usually the simple eagle is at the top, the so-called Eagle-Maiden below on the right, and the Bends impaling the dimidiated eagle on the left. Frequently, especially on the coins, only the eagle-maiden and the dimidiated eagle appear. Sometimes also we find the Imperial eagle without the shield surmounting the two lower coats, and, as it were, protecting them with its wings.