RM Sotheby's Sealed May 2026: Mercedes-AMG ONE, LaFerrari & Maserati Zagato
The RM Sotheby’s Sealed May 2026 auction opens for bidding on May 13, 2026, with lots beginning to close on May 20, 2026. This exclusive RM Sotheby’s online auction features one of the most compelling curator selections of the year – a tightly edited group of modern hypercars, Italian coachbuilt masterpieces, and championship-winning motorsport machinery. If you are looking to bid on rare collector cars online in 2026, this is the sale to watch.
What Is the RM Sotheby's Sealed Format?
RM Sotheby’s Sealed is a private online platform built for the discreet exchange of significant collector cars. Unlike a traditional live auction, bidders submit confidential offers through the platform, and when bidding closes, the highest bid wins – no auction room, no escalating floor drama. It is an increasingly preferred format among high-net-worth collectors who value privacy as much as pedigree.
The 2024 Mercedes-AMG ONE is one of the most desirable modern hypercars ever produced, and this example takes it a step further. Estimated at €2,650,000-€3,000,000 in the RM Sotheby’s Sealed May auction, it is one of just 275 examples ever built – and the vast majority left the factory in conservative shades of silver, grey, or black.
This car wears the rare, paint-to-sample Sonderlackierung Reingrün exterior finish – a custom vivid green color that cost €27,500 as a factory option and makes the car immediately and unmistakably distinctive. Gloss-black brake calipers, matte-black magnesium wheels, and a Digitalgrün-stitched Magma Grey Nappa leather interior complete a specification that is as bold as it is beautiful.
With just 185 km recorded from new – all attributed to factory testing – this Mercedes-AMG ONE for sale is effectively as-delivered from the factory. A “Service A” completed by Mercedes-AMG in February 2026 (valued at over €37,000) extends the factory warranty through February 2028, making it one of the most fully supported hypercars currently on the market.
Few collector cars offer the combination of rarity and racing provenance found in this 2014 Ferrari LaFerrari, estimated at €4,500,000-€5,000,000 in the RM Sotheby’s Sealed May 2026 sale. It was delivered new in October 2014 to Felipe Massa, Ferrari’s Formula 1 driver, and first registered at his Monaco address.
Massa personally specified several bespoke features, including a unique steering wheel and firewall plaques bearing his name – details that make this Ferrari LaFerrari for sale permanently traceable to one of Ferrari’s most celebrated modern-era drivers. Fewer than 4,000 km have been recorded from new, and the current consignor acquired the car directly from Massa in April 2021, creating an impeccable and fully documented ownership chain. An annual service was recently performed by Formula Automobile A/S, Denmark’s official Ferrari dealer, ensuring the car is ready to drive.
If any single lot in this RM Sotheby’s online auction belongs in the category of automotive art history, it is the 1954 Maserati A6G/54 2000 Spyder by Zagato. This is the only open-bodied – or “Spyder” – example ever created through the Maserati-Zagato collaboration on the A6G/54 platform, making it a genuine one-of-one.
Chassis 2101 is the prototype for the entire A6G/54 series, the first car fitted with Maserati’s dual-overhead cam engine derived from its championship racing program. Its provenance is steeped in history: the car was originally commissioned for Argentine President Juan Perón, with specific coachwork modifications made at his personal request before it was exhibited at both the 1955 Geneva Salon and the 1956 Paris Salon.
Following a meticulous full restoration in 2024, the Maserati returned to the concours stage and claimed Best in Class and the Jules Heumann Most Elegant Open Car award at the 2024 Pebble Beach Concours d’Élégance. Its estimate is available upon request – the kind of discreet signal that this rare Maserati Zagato for sale is expected to command extraordinary attention from the world’s most sophisticated collectors.
The Ferrari Enzo remains one of the most sought-after modern collectibles in the world, and this 2004 Ferrari Enzo for sale at RM Sotheby’s Sealed carries an estimate of €6,300,000-€6,900,000. It has covered fewer than 7,200 km from new, retains all matching numbers, and received Ferrari Classiche certification in 2025.
A major service valued at over €30,000 was completed in 2025, followed by a 190-point mechanical inspection carried out by Dutch Ferrari specialist Munsterhuis Sportscars in February 2026. For collectors targeting blue-chip modern Ferraris, this is among the finest examples available on the RM Sotheby’s online platform this year.
Motorsport collectors have rarely seen an opportunity like this: chassis 06 of the 1997 Williams FW19, the car in which Williams clinched both the Drivers’ and Constructors’ World Championships – the team’s last titles to date. Estimated at £1,100,000-£1,500,000 in the RM Sotheby’s Sealed May sale, this F1 car was used exclusively for testing by both 1997 World Drivers’ Champion Jacques Villeneuve and Heinz-Harald Frentzen.
Retained by Williams Heritage until 2019, the car underwent a full restoration before entering the private market. It is offered with an extensive spare parts package – a complete record of one of Formula 1’s most storied championship seasons preserved in carbon fiber and Renault power.
For two-wheeled collector car enthusiasts, no lot in this RM Sotheby’s Sealed May 2026 auction carries more emotional weight than the 1996 Aprilia RS125R – the motorcycle on which a teenage Valentino Rossi scored his first-ever Grand Prix victory, at the 1996 Czech Republic Grand Prix at Brno.
Still wearing its original Scuderia AGV Aprilia livery and Rossi’s iconic number 46, this bike is offered without reserve and estimated at €100,000-€150,000. Factory team documentation verifies every race entry, and the motorcycle has been authenticated as the earliest surviving artifact of MotoGP’s most decorated career. For collectors of motorsport memorabilia, there may not be a more historically significant two-wheeled lot offered at RM Sotheby’s online in 2026.
How to Register for RM Sotheby's Sealed May 2026
Bidding on the RM Sotheby’s Sealed May sale is open now, with lots 1-6 closing on May 20 and lots 7-13 on May 21, 2026. To register, prospective bidders must provide valid government-issued photo identification and a bank letter on official letterhead.
Whether your collecting focus is modern hypercars, Italian coachbuilt classics, F1 race cars, or MotoGP history, this RM Sotheby’s Sealed auction delivers one of the most precisely curated collector car offerings of the year. Visit rmsothebys.com to register and explore each lot in full.