An asklepian.
<a href="//commons.wikimedia.org/wiki/User:.Koen" title="User:.Koen">.Koen</a>
CC BY-SA 4.0
self-made, SVG-version of <a href="//commons.wikimedia.org/wiki/File:Esculaap3.png" title="File:Esculaap3.png">Image:Esculaap3.png</a> by Evanherk, GFDL