How often do you come across an Alfa Romeo that isn’t just rare, but likely one of a kind? This 6C 2500 Sport Cabriolet by Carrozzeria Touring is one of just five known to have been built with this particular open body style, inspired by the Torpedino Brescia line. And among them, this example is particular not just for its rarity, but for its intact matching-numbers drivetrain, rich documentation, and high-quality restoration carried out with restraint and care. This chassis 915128 was build on June 16th, 1942 and delivered on April 15th, 1943, reportedly to General Von Carnap, a Wehrmacht officer who acquired several 6C chassis during the war. It seems the car was used by senior German military officials before being left behind at the end of the conflict. By the 1960s, it had resurfaced in Texas, and by 1989, it was acquired by California collector Paul Myers, who commissioned a full restoration from Phil Reilly & Co., with bodywork carried out by Moal Coachworks: both renowned for top-level concours preparation. The car earned multiple concours awards, including Best in Class at the Greenwich Concours, Most Elegant Sports Car at Amelia Island, and a CCCA National First Prize. It was also displayed at “The Candy Store,” a private collector’s clubhouse in the San Francisco Bay Area. In 2013, the car returned to Europe, where the new owner brought it back closer to factory specification. It was repainted in its correct dark blue, retrimmed in beige leather, with matching carpets and headliner, and fitted with a new green-grey mohair soft top. The dashboard was repainted in body color, just as it would have left the factory, and the chrome and aluminum trim was refurbished. All glass and seals were replaced, and a discreet battery cut-off switch is the only non-original visible element. Mechanically, the car runs its matching-numbers 2.5L inline-six (engine no. S923928), mated to a 4-speed manual gearbox. The correct Weber 36 DCR carburetor is present. The suspension and braking systems were overhauled, the exhaust replaced, and the engine bay presents cleanly, consistent with a well-documented restoration. The electrics were fully rewired to period-correct spec, and all original instruments and switches are present and working. No modern seatbelts have been added, staying true to the original delivery spec. The car rides on silver-painted wire wheels fitted with Michelin 6.00/6.50 x 18 tyres, all in excellent condition. Panel fit is tidy, the paint shows depth and quality, and the overall presentation is elegant and unforced. The car has now 1345 km on the clock, after its restauration. The car now resides in the Netherlands, having been recently imported, and is ready for road registration. It comes with a U.S. title, a partial international history file, and remains fully matching numbers.