The current generation Mercedes-Benz SL-Class has been overshadowed bt the far more dynamic (not to mention cooler) Mercedes-AMG GT since its arrival. This trend began with the AMG GT's immediate predecessor, the SLS AMG, but it wasn't always like this.

Before either of those two AMG-built dream machines hit the road, the SL-Class was the top dog, especially the in AMG guise. And there was one particular standout among them, the Mercedes SL65 AMG Black Series, built from 2008-2011.

Just 350 examples were built with 175 sent to the US. And now one of them is up for sale on Bring A Trailer. This 2009 SL65 AMG Black Series, like all others, is powered by a hand-built twin-turbo 6.0-liter V12 with 661 horsepower and 738 lb-ft of torque. Just to compare, today's most powerful AMG GT is the GT R, which has a total of 577 hp and 516 lb-ft of twist. A Black Series variant is expected in the near future.

The SL65 AMG Black Series was properly bonkers. Its additional output over the "standard" SL65 AMG (rated at 604 hp) was made possible by larger turbochargers and optimized wastegate ducts that enable increased air throughout the coupe's body. It was 551 pounds lighter than the SL65 AMG because of numerous carbon fiber parts. AMG also ditched the heavy folding hardtop in favor of a fixed roof, which made the retractable rear spoiler possible.

Even though the Black Series was equipped with a five-speed automatic with paddle shifters, performance is still quite impressive thanks to gearshift times being 25 times faster in M2 mode compared to M1 mode. Top speed is about 200 mph with 0-62 mph coming in 3.8 seconds. After more than a decade these numbers remain solid.

Aside from that rear wing, exterior changes immediately stand out because of widened front and rear axles, and the rear apron with diffuser fins.

The AMG-specific forged alloy wheels are also quite big, measuring at 19/20 inches front/rear. All in all, it's one hell of a package that any collector will crave. This particular example has been properly maintained by its current owner and it has only 7,800 miles on it. Both the exterior and interior, which features AMG-exclusive Anthracite leather with carbon fiber trim, appears to be immaculate.

There's even a "USA-ONE-OF 175" shift knob. As of this writing, the highest bid was $125,000 but we fully expect this to increase by the time the auction ends next Tuesday.