(Motorsport-Total.com/Motor1) – While modern super sports cars often take the spotlight, a rare classic from Maranello steals the show in Monterey. At the RM Sotheby’s auction there, a 1958 Ferrari 250 GT Cabriolet Series I is being offered, which is one of the most significant pieces of the event. With an estimate of up to 5 million US dollars, the vehicle highlights the price dynamics for rare vintage cars.
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This figure raises two questions for collectors: What makes this 250 GT Cabriolet so special, and are 5 million US dollars excessive or in line with today’s Ferrari market? Anyone misjudging either question misunderstands both the provenance of the vehicle and the pricing logic of top auction houses for rare Ferraris from Maranello.
Estimate for the 1958 Ferrari and context of the Monterey auction
The 1958 Ferrari 250 GT Cabriolet Series I will be offered at RM Sotheby’s in Monterey 2026; the auction takes place from August 13 to 15 at the Portola Hotel & Monterey Conference Center. In the catalog, the car is one of the most significant lots of the auction.
RM Sotheby’s estimates the value at 4 to 5 million US dollars and lists the vehicle as the 18th of only 40 Series I Cabriolets built. Originally presented at the New York Auto Show, the Ferrari is today largely in original condition. Chassis, engine, transmission, and rear axle have matching numbers; additionally, there is the Ferrari Classiche certification and an award in the Preservation Class at the Pebble Beach Concours d’Elegance 2023.
Photo series: Historic elegance in the open air: The Ferrari 250 GT Cabriolet in detail
Only a short list of Monterey lots exceeds the upper estimate of more than 5 million US dollars. With 4 to 5 million, the 1958 Cabriolet is still one of the main attractions among street-legal Ferraris. In the direct catalog environment of modern Maranello flagships, its valuation does not appear as an outlier – but as an appropriate classification for one of the rarest and historically most significant open Ferraris of its era.
Why this Ferrari is so rare – and how its value is to be classified
This 1958 250 GT Cabriolet stands out because early open Ferraris were built only in very small numbers. The Series I models by Pinin Farina combine handcrafted bodywork with a 3.0-liter Colombo V12 and a show car history that includes the New York appearance as well as a long-documented ownership history.
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On a broader market level, our look at current Ferrari price developments around the 550,000 euro mark shows how far “entry-level” Ferraris in the six-figure range are from the top lots in Monterey. The test drive report on the Ferrari Testarossa, in turn, illustrates how older Ferraris feel away from the auction spotlight.
Anyone watching this 1958 Cabriolet with a bidding card has a simple checklist: confirm the matching-numbers drivetrain, check the documents from the Ferrari Classiche file, and study the concours history carefully. Because with a Ferrari in this price range, the smallest details in originality and documentation can shift the winning bid by millions.
Collectors who miss this chassis will see more rare Ferraris at charity auctions and special formats, including events like the charity auction of the Ferrari Daytona SP3. But this 1958 250 GT Cabriolet remains a striking reflection of where the values of top-class Ferraris from the 1950s lie in Monterey in 2026.
Motor1’s opinion: The 1958 Ferrari 250 GT Cabriolet is in original condition, not a project or a modified one-off. Bidders therefore primarily pay for originality, documentation, and direct access to the most important concours events. The final bid will show whether the market now values this contemporary authenticity at the same level as newer blue-chip Ferraris.
Other significant auctions in the automotive sector:
Jerry Seinfeld’s Mercedes 500 E sold for an astronomical sum
Pagani Zonda achieves eight-figure record price at auction
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