Is this the rear mounted one or the A-pillar antenna?

these are hard to find, the one on my   junker '88 broke back in '94 i've
rigged it several times with portable radio antenna. I just got my "new" '89
240 and the previous owner had stuck one of those rubber antenna on it, I
thought i could just go to the auto parts store and get an antenna and put it
on real easy, wrong...first of all the hole is too small, so instead of
butchering the car for a four dollar antenna, i made it work by removing the
little toggle things from the new antenna, remove the little washer with the
teeth from the volvo antenna,slide it onto the new cheapo ant. to rest where
the toggle things were, now insert ant. up through the trunk, now you have to
use the outside plastic mount from the volvo ant.but first you have to knock
the metal threaded part out, and use the nut from the new one to secure it. my
mount was brittle so it cracked a little so i used a little silicone adhesive
on it,and put a little around the hole, looks better than the one that was one
there and works better. i just wanted radio reception, so at that point i
didn't care.   sorry so long a post.                                          
                                                                  mark