Here's pics...
http://i517.photobucket.com/albums/u...1/13bd6af4.jpg
http://i517.photobucket.com/albums/u...1/59e9425c.jpg
Note the little clip at the bottom of the photo, this is the button clip thing that pushes into the hole to spread the clip which holds it on... If you get my drift...
I think the part number is.... (I should have written it down... will check and reconfirm tonight)
171 857 827 C
Listed here for reference - 1980 Golf VW Replacement Parts