Original radio on a UK 1987 316

[kevpatts]

How would I find out what model radio my E30 originally had? It's a Feb 1987 UK (actually Irish but I think they were the same as the UK models) 316 (NOT 316i!).

I'm currently restoring it and looking to get the original radio back in.

Here are some I've looked at:

http://www.ebay.com/itm/BMW-E30-E28-Radio-CM5907-325-325is-325es-M3-528e-533i-535i-M5-/301027488364?pt=Car_Audio_Video&hash=item4616a2f26c&vxp=mtr#shpCntId

http://www.ebay.com/itm/BMW-CM5908-SLIDER-RADIO-CASSETTE-STEREO-E30-E32-E34-318-325-M3-525-540-M5-735-/390718330535?pt=Car_Audio_Video&hash=item5af8a096a7&vxp=mtr

http://www.ebay.com/itm/Blaupunkt-Bmw-Reverse-RDS-Radio-Genuine-M-Tech-E30-E32-E30-Convertible-325-/131088802269?pt=UK_In_Car_Technology&hash=item1e858061dd

http://www.ebay.com/itm/Bmw-Bavaria-c-III-Radio-Bmw-E30-Classic-rare-Radio-Convertible-m3-325-M-Tech-/131095655824?pt=UK_In_Car_Technology&hash=item1e85e8f590

[E30NJ]

the first or second one are the OEM to the E30. dont know much about the 3rd or fourth one.

[kevpatts]

This is the one currently in the car. It's of the era but I'm pretty sure it's not original.

I've been told by a BMW dealer that there's no way to tell what was originally in the car from the VIN/chassis number. Is there any other way I could find out?

[kevpatts]

I bought this one. I'm pretty sure it's right: http://www.ebay.com/itm/Bmw-Bavaria-...item1e85e8f590