Lock on a chest used to store valuables, which rings when the key is turned (we hear this three times). Chest is in the <a href="https://en.wikipedia.org/wiki/Ennejma_Ezzahra" class="extiw" title="en:Ennejma Ezzahra">Ennejma Ezzahra</a> palace museum, Sidi Bou Said, Tunisia.
<a href="//commons.wikimedia.org/wiki/User:Pigsonthewing" title="User:Pigsonthewing">Andy Mabbett</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>