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A rare survivor of Oldsmobile's final year for its standalone muscle nameplate has landed on Hagerty Marketplace, where bidding on this 1971 442 Convertible has already climbed past $31,000 with more than a week left before the gavel falls. Finished in Sable Brown over a white top and interior, the car pairs numbers-matching big-block power with a refurbishment that gives it fresh mechanicals underneath a genuine early-1970s silhouette.
Under the hood is a 455-cubic-inch Rocket V8 mated to a TH400 three-speed automatic, both of which the seller says were rebuilt as part of a refurbishment finished before the car changed hands in 2025. The drivetrain overhaul reportedly extended to the rear axle assembly as well, and the convertible wears its 14-inch Super Stock III wheels wrapped in BFGoodrich redline tires along with power steering, power-assisted front disc brakes, and a factory-style dual exhaust setup.
Inside, white vinyl bucket seats and a center console flank a power-operated top, with air conditioning and wood-veneer accents rounding out the cabin. A Retro Autosound head unit is the lone deviation from stock, keeping the car close to how it would have left Oldsmobile's Lansing, Michigan assembly plant in the spring of 1971. Its chassis number decodes to a 442-series convertible built that year, and the engine stamping reportedly matches the car's serial number, a detail collectors weigh heavily when assessing originality.
1971 marked the last season Oldsmobile sold the 4-4-2 as its own model rather than an option package, and emissions-driven detuning already had output slipping from the year before. According to Hagerty Valuation Tools, a 1971 Oldsmobile 4-4-2 convertible in number-3, or Good, condition currently carries a price guide value of roughly $50,700, up 6.1% recently, while good-condition average across the model's variants sits closer to $60,100. The spread in this market is wide: Hagerty's data shows the top auction sale over the past three years reaching $203,500, against a most-recent sale of just $17,089, underscoring how heavily options, originality, and documentation swing a 442's price. With more than 300 examples crossing public auctions in that span, the nameplate remains liquid enough that a numbers-matching convertible like this one has a clear benchmark to bid against.
Buyers cross-shopping this era of Detroit muscle can find plenty more context in Motorious' archives. Our deep dive on the 1969 Oldsmobile 442 traces how the Hurst/Olds variant pushed the platform's performance further, while this recently listed 1968 Chevrolet Camaro resto-mod shows how Hagerty's valuation tools get applied to a heavily modified build rather than a stocker. For a look at how Oldsmobile's chief rival evolved through the same period, our history of the 1966 Chevrolet Chevelle covers the early days of the muscle car wars from the Chevrolet side.
The auction remains live on Hagerty Marketplace, where the listing includes a full 100-photo gallery, service history from the refurbishment, and a clean Washington State title, with bidding open for interested buyers through August 13.
