Civil Flag and Civil Ensign of the Kingdom of Sardinia (1816-1848).
<a href="//commons.wikimedia.org/wiki/User:FDRMRZUSA" class="mw-redirect" title="User:FDRMRZUSA">FDRMRZUSA</a>
<b>1816-1848</b>
<span class="int-own-work" lang="en">Own work</span>. <b>Based on these sources: <a rel="nofollow" class="external text" href="http://www.rbvex.it/sardegna.html"><i>Bandiere Stati preunitari italiani: Sardegna</i></a> and <a rel="nofollow" class="external text" href="https://www.crwflags.com/fotw/flags/it-sark2.html"><i>Flags of the World: Kingdom of Sardinia - Part 2 (Italy)</i></a></b><i>.</i>