<p>47 mm gun for Vickers tank.  A single example of this gun was delivered to Finland on a 6-ton Vickers tank for testing purposes.  Finland chose to use 37mm Bofors guns, so this gun was removed.
Displayed in Finnish Tank Museum (Panssarimuseo) in Parola. 
Photo taken on July 14, <a href="//commons.wikimedia.org/wiki/2006" title="2006">2006</a>.
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Source: Photo by me, <a href="//commons.wikimedia.org/w/index.php?title=User:Balcer&amp;action=edit&amp;redlink=1" class="new" title="User:Balcer (page does not exist)">User:Balcer</a>.
<a href="//commons.wikimedia.org/wiki/User:Balcer~commonswiki" title="User:Balcer~commonswiki">Balcer~commonswiki</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>