The Porsche 928 has been on my mind lately, no thanks in part to the knowledgable folks over at flüssig magazine. Normally we like to feature examples for sale in the US, but today I decided to peruse one of our favorite sites for used vehicles in Europe, Mobile.de. After searching about, I found a diverse grouping of 928s, all with their own particular charm. We’ll start with this eye catching 928CS prototype, the rarest of all 928 variants, for sale in Spain.