Having a built up a sizeable collection of pristine BMW M5s, a German car collector has decided it's time to cash in on his prized possessions, with no less than seven examples of the super sedan headed to the Classic Car Auctions sale this weekend. Up first is a couple of BMW E28s. Only one is a bona fide M5 (red), the other is actually a M535i, but is still a sought-after model. The authentic E28 was the fastest sedan on the planet when it launched, with power coming from a 3.5-liter inline-six borrowed from the M1 and rated at 282 hp. It comes with 176,000 miles on the clock.

A pair of E34 sedans and a wagon (Touring) are up next, and like the E28, were hand built. The wagon is one of just 891 ever made, while power comes from a 335-hp 3.8-liter inline-six. That same engine powers the black sedan, but the Macao blue metallic model, complete with 17-inch turbine rims, boasts a 311-hp 3.6-liter unit. The final two M5s are the Imola Red E39, with a 394-hp 4.9-liter V8 and aluminum suspension, and an E60 M5 25th anniversary edition model. Arguably the most valuable of the collection, it comes in Frozen Silver Metallic and is one of just 25 ever built. Power comes from a Formula 1-inspired 5.0-liter V10 rated at 500 horses.