Schlüsselschalen

Schlüsselschalen, German for "key shells," refers to a historical method of preserving documents or small, valuable items. This technique involved the use of a hollowed-out animal bone, typically from a fowl, which was then sealed with wax or clay. The name derives from the fact that these bone casings often served as a place to conceal a physical key, hence "Schlüsselschale." These were not meant for large documents but rather for short notes, seals, or small trinkets that needed to be discreetly transported or hidden. The use of Schlüsselschalen was prevalent in certain periods and regions, particularly where literacy was less common and the need for secure, private communication or storage was paramount. The practice highlights a creative approach to security and secrecy using readily available natural materials. Evidence of Schlüsselschalen has been found in archaeological contexts, offering insights into past methods of information management and personal security. The exact prevalence and duration of their use are subjects of ongoing historical and archaeological research.