I have a shot of this aircraft at BCN.  Here it is taxi-ing to depart at MAD in the early 1980's.  A company A300 sits behind.
<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@N02/22017899559/">Iberia DC-9-30 EC-BIJ at MAD</a>