Peculiarity of production (MK Berlin)

"A notable, characteristic or unusual physical feature of an individual numismatic object which distinguishes it from other examples of the same group, or of a group of numismatic objects that marks it out from other groups, and which is related to the process of production of a numismatic object."

"Die in Verbindung mit dem Prozess der Herstellung aufgetretenen besonderen und individuellen Eigenschaften eines numismatischen Objekten wie zum Beispiel Stempelbruch, Schrötlingsriss etc."