Pratt &amp; Whitney Twin Wasp R-1830 S1C3G aircraft engine serial number 362121 in the Aviation Museum of Central Finland. The crankshaft on the left belonged to a Twin Wasp on DC-3 DO-10 which crashed on 3.10.1978.
<a href="//commons.wikimedia.org/wiki/User:MKFI" title="User:MKFI">MKFI</a>
<span class="int-own-work" lang="en">Own work</span>