To name the greatest of Giorgetto Giugiaro’s designs is probably impossible, but here is one worthy candidate for the short list: the Maserati Boomerang.

If you were to ask famed Italian auto designer Giorgetto Giugiaro to name his favorite work, he might well choose say, the Hyundai Sonata or the Volkswagen Scirocco. After all, these cars have been produced in vast quantities and admired by millions of car buyers around the world. For a designer, can there be any higher compliment? But if you ask his peers in the styling community to identify Giugiaro’s greatest achievement, this car will no doubt rank at or near the top of the list: the 1972 Maserati Boomerang.

First shown to the public as a non-running studio glider at the Turin Motor Show in November of 1971, the Boomerang reappeared at the Geneva Auto Show the following March as a fully roadworthy automobile with a Maserati Bora V8 drivetrain, chassis, and running gear. The Boomerang’s stunning details included a greenhouse that dipped dramatically below the beltline and a round instrument pod encircled by the rim of the steering wheel, and these features are just as stunning today, nearly five decades later.

After a few seasons on the European auto show circuit, the Boomerang was sold to a series of private owners and made periodic appearances at Monaco, Pebble Beach, in a Louis Vuitton advertising campaign, and elsewhere. At the Bonhams Château de Chantilly sale just outside Paris in 2015, the car found its most recent owner of record, trading hand hands for $3.7 million. Striking in photographs, the Boomerang is that rare car with seemingly no bad angles. Still, the best way to view the car is in motion, so we’ve included this nicely done auction house clip of the machine on the road. Video follows. Photos and video courtesy of Bonhams.