The Plymouth Barracuda will forever be one of the most beloved muscle cars from the late 1960s until the early 70s. But it's the third generation that's become highly sought after by deep-pocketed collectors who are more than willing to pay up for something extraordinary. This is one of those cases.

Mecum Auctions will have something very special later this month at its annual Indy event in Indianapolis, a one of 12 1971 Plymouth Hemi Cuda Convertible. Seven examples were made for the US and another five were sent overseas, such as the example you're looking at. It was exported to its original owner in France and returned to the US in 1993 and has been with its current owner for two decades who still drives it on occasion.

Because it was destined to be shipped abroad, it came equipped with a special 240 kph speedometer. The odometer now reads 98,553 kilometers, or about 60,000 miles. And yes, it's all original. The 426/425 horsepower Hemi V8 and four-speed manual transmission with a Hurst Pistol Grip shifter are both numbers matching and it's the only '71 model produced in Winchester Gray.

It's also equipped with the A33 Track Pak that included a 26-inch radiator, seven-blade viscous fan, and suspension upgrades. The shaker hood, cheese-grater grille, 'Cuda emblems, chrome rocker moldings, and bright exhaust tips all remain in remarkable condition.

The interior is literally a time capsule. Everything still works, such as the power windows and gauges in the Rallye dash. There is no radio because it was never originally ordered, and the high-black vinyl bucket seats and three-spoke steering wheel hardly show any age.

Adding to the car's uniqueness are several original documents like the French title and copies of the import papers. This was also the final year of the convertible body style, a fact that pushes the value even higher. And speaking of which, what's it worth today? We hope you're sitting down for this one because the auction house estimates a $5.75 million to $6.5 million value.

Classic American muscle cars have been increasing in value over the past several years but it takes something ultra-special to command a price like this. Who knows? Perhaps one day the Dodge Challenger SRT Super Stock or SRT Demon will cost millions.