This was taken sometime during the late 1970`s
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/95736569@N00">Graham Smith</a>
CC BY 2.0
originally posted to <b><a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a></b> as <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/95736569@N00/2650178015">Just doing his job !!!</a>