Mid-1980's.  This twin suffered a nosewheel tyre incident at NWI and resulted in it largely being written off.  And the tiniest reg just visible on the tail.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/130275500@N02">G B_NZ</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/130275500@N02/24052318526/">Cessna 335 N2706X at SOU</a>