<a href="//commons.wikimedia.org/wiki/File:Flag_of_Italy.svg" class="image" title="Italy"><img alt="Italy" src="https://upload.wikimedia.org/wikipedia/commons/thumb/0/03/Flag_of_Italy.svg/22px-Flag_of_Italy.svg.png" decoding="async" width="22" height="15" class="thumbborder" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/0/03/Flag_of_Italy.svg/33px-Flag_of_Italy.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/0/03/Flag_of_Italy.svg/44px-Flag_of_Italy.svg.png 2x" data-file-width="1500" data-file-height="1000"></a> <a href="//commons.wikimedia.org/wiki/Italia" title="Italia"><span title="country in Southern Europe">Italy</span></a>, <a href="https://en.wikipedia.org/wiki/Regia_Marina" class="extiw" title="w:Regia Marina">Regia Marina</a>. The Italian frigate Castelfidardo (1864) taken at Naples in the autumn of 1866 before leaving for La Spezia.
Unknown author<span style="display: none;">Unknown author</span>
scan from own private archive. Another version is available <a rel="nofollow" class="external text" href="http://www.marina.difesa.it/storiacultura/storia/almanacco/Pagine/ABCD/castelfidardo1.aspx">here</a> at marina.difesa.it.