Italdesign has styled more cars than we'd dare venture to count. But it's only made two – or two variants of the same – under its own name that you could actually buy. That is, if you had the cash and took the opportunity. But if you check the first box and not the second, we have good news, because your chance is coming up again.

In Germany next month, RM Sotheby's will auction off an exceedingly rare Italdesign ZeroUno – the first standalone product from Automobili Speciali Italdesign and precursor of the convertible Duerta version that followed.

Less than two years after founder Giorgetto Giugiaro left the studio and sold the remaining shares to the Volkswagen Group, the design office that once bore his name presented the ZeroUno at the 2017 Geneva Motor Show. It was based on the same building blocks that underpin the Audi R8 and Lamborghini Huracan, including the 5.2-liter V10 tuned to deliver a whopping 610 horsepower and 383 lb-ft of torque. Only it was completely re-cloaked in custom bodywork, arguably more aggressive than the standard sheetmetal covering either.

The Automobili Speciali division only made five examples, followed by another five Duerta roadsters.

Despite a reported $1.7-million asking price, they all sold out rather quickly. But whoever bought this tricolore-striped matte-black example never drove it. That's a bit of a shame for him, but his loss could be your gain, because it's now coming up for auction in brand-spanking new condition, with only "delivery mileage," never having even been registered for the road.

Don't expect it to sell for cheap, though. RM Sotheby's doesn't: it estimates its value in the ballpark of €950k-1.5 million, or about $1-1.7 million at current exchange rates. Given its rarity and desirability, we won't be surprised if it ends up selling for much more.