I think the Trabant registration is appropriately LE 89 00
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/28179929@N08">Sludge G</a>
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/sludgeulper/26555170550/">Erfurt, DDR  August 1989</a>