Bird-eye view of Siena, the coat of arms of the Medici family at bottom left and key of places at either side.
<br>Etching
mid 17th century (?)
<a rel="nofollow" class="external free" href="https://www.britishmuseum.org/collection/object/P_1898-0725-8-1469">https://www.britishmuseum.org/collection/object/P_1898-0725-8-1469</a>