Pratt &amp; Whitney R-1830 S1C3G Twin Wasp 2-row radial piston aircraft engine in Aviation Museum of Central Finland
<a href="//commons.wikimedia.org/w/index.php?title=User:Myllyre&amp;action=edit&amp;redlink=1" class="new" title="User:Myllyre (page does not exist)">Myllyre</a>
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<span class="int-own-work" lang="en">Own work</span>