Original Radio/cass for Mk2 1989

[Tramp]

After picking up my 2 door 89 MK2 the radio cassette in it was a Pioneer KEH-1530. SERIAL RLH1071326EW. After much research i am no closer to finding whether this is the original radio/cassette.
There seems to be a lot of chopping and changing by VW in their years around that period.

Can anyone find out which was the original. Is the pioneer above the right one?

Cheers

[russ-vdub]

Almost 100% sure Pioneer is not a standard VW part, they usually fit Blaupunkt as standard iirc.