Carlos, try following link:
https://ssl.kundenserver.de/www.top-discount-verdeck.de/sess/utn;jsessionid=154305e6dfbd48c/shopdata/index.shopscript
I donot speak German, but I think they sell individually the rear half - but then again you'll have a problem in exact colour matching.
I don't know your car's colour but if I still had my silver R129 (sold 1 month ago..), I would go for the light grey soft top - for a more rare look and also to avoid the contrast in the eye (silver car / black soft top).
Lastly, all pre-1996 R129's have black door handles. Starting from '96, the door handles were the same colour as the car.
George
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