Stone basin hidden in a cabinet in the wall besides a window in the dining room of Auchinleck House, Ayrshire. Probably served as pissoir.
<a href="//commons.wikimedia.org/wiki/User:Mfbruellmann" class="mw-redirect" title="User:Mfbruellmann">Mfbruellmann</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>