Lot of the Day: A 1975 Monteverdi 375/4 Limousine Heads to Zürich, and Its Restoration File Will Set the Price

Broad Arrow’s Zürich sale on November 7 at The Dolder Grand includes a car that most collectors have never seen in person: chassis 3115, a 1975 Monteverdi High Speed 375/4, offered at an estimate of CHF 185,000–230,000 (roughly $224,000–$279,000 at the October 19 rate of about 1.21 dollars per franc). That is an estimate, not a bid; the catalogue shows no current bid and Broad Arrow’s page lists the car as “inquire.” The interesting question is not whether the Monteverdi 375/4 is rare. It is whether anyone can prove how rare, and what that proof is worth.

What the Monteverdi 375/4 actually is

Peter Monteverdi was Ferrari’s Swiss distributor until, in Hagerty’s telling, Enzo Ferrari demanded he buy 100 cars up front. He founded his own marque in 1967 instead, pairing Swiss-built chassis with American Chrysler V8s and Italian coachwork. The 375/4 is the four-door limousine in the High Speed 375 family: a five-seat Fissore-bodied car, roughly 5.3 meters long, built to cross a continent at 150 mph. Chassis 3115 carries the 7.2-liter (440 cubic-inch) Chrysler Magnum V8, rated at 375 SAE horsepower, with the optional three-speed automatic. Period claims put the 375/4 at about 155 mph, with 0–62 mph in 6.9 seconds; treat those as factory figures.

It is a different proposition from the coupes. The two-door 375 L has taken the family’s headline results, while the sedan has stayed a connoisseur’s car. That is useful context for a buyer deciding how much of a coupe-sized premium a four-door deserves, and a similar question about big luxury sedans surfaced in our piece on Daxecker’s S-Class collection.

How rare is “one of fewer than 30”?

Broad Arrow’s catalogue says 3115 is “believed to be one of less than 30” 375/4s built. Other sources do not agree on the number. Hagerty’s UK editors cite 28 to 35 cars between 1971 and 1976 and note that record-keeping was poor; Below the Radar’s Richard Dredge reports that the factory claimed more than 30, that only eight are known, and that 15 to 20 is a more realistic estimate. An unauditable production figure turns individual cars’ paper trails into the real scarcity. A 375/4 with a documented history is rarer, in practical terms, than the headline number suggests.

The car’s documented history

According to the catalogue, 3115 was first registered in Switzerland in February 1975 and passed through two Swiss owners before the current collector bought it in 2016. A restoration between 2016 and 2020 left it in silver grey metallic over black leather, and it has since appeared at concours events including Zürich and Baden-Baden. It shows about 69,000 km (roughly 43,000 miles), described as “believed to be original,” and was serviced in July 2026 by M&R Automobile. The seller is described only as the current collector.

What the catalogue does not say is as important as what it does. It does not name the restorer, itemize which components were replaced or remade, or say whether the interior is original or new. “Believed original” mileage is not documented mileage. A concours-level restoration protects a car from the bad end of the market but also removes some of the evidence that would prove originality, so the file behind the work matters more than the finish.

Comparable sales: three Monteverdi markets in one table

Two items stand out. First, 3116, the very next chassis number, sold in 2022 for CHF 112,125 in project condition, about 60 percent of the low end of this estimate. Second, a 375/4 on Bring a Trailer drew a $400,500 bid last September and still failed to sell, which suggests that at least one seller expects far more than Broad Arrow’s estimate for a good example. Hagerty’s UK editors also cite a Condition 4 value of $73,000 for a 375/4, the floor of the market for a tired car.

Those numbers bracket the estimate rather than validate it. Different venues, years, currencies and conditions are being compared, and the unsold BaT result is a statement of the seller’s reserve, not a market price. The 2019 Essen sale of 3007 at €174,800 is the nearest like-for-like data point, and in nominal terms it sits below the current estimate.

Potential concerns

Buyers should ask for the restoration invoices and photographs, evidence for the mileage beyond the catalogue’s “believed,” and the conditions of sale, including the buyer’s premium and any Swiss import or VAT treatment if the car leaves the country. The coupes have set the family’s headline results, so a bidder paying a coupe-adjacent price is betting on the rarity of the four-door, which, as noted above, nobody can count precisely. Mechanically, the Chrysler V8 and automatic are familiar; the Fissore-built body and trim are not, and it is worth knowing which of them were remade.

The same logic applies elsewhere in the Zürich catalogue. Nick Heidfeld’s BMW 3.0 CSL asks whether a built-to-collect car holds its premium, while a Roos-converted Lagonda shooting brake tests whether a story can outweigh a spec sheet. Paperwork is the common thread, as it was with the one-off Bizzarrini prototype estimated below a regular Strada and the 1965 AC Cobra 289 at Bonhams Zoute, where a conversion question was the issue.

The factor most likely to set the price

The decisive factor will be the restoration file and the proof behind the 69,000 km. If the documents show a thorough, period-correct 2016–2020 restoration and credible original mileage, bidders can reasonably argue for the upper half of the estimate and beyond, and the $400,500 Bring a Trailer bid will look less like an outlier. If the file is thin, the car becomes one more silver-grey Monteverdi that looks right and cannot be verified, and the estimate’s lower half is more plausible. Either way, the result on November 7 will say something about what collectors will pay for a four-door Swiss grand tourer, and whether paperwork is worth more than a production count nobody can confirm.

Facts in this article come from Broad Arrow’s catalogue page for the lot, the RM Sotheby’s Essen 2019 listing, Bring a Trailer’s Monteverdi results page, Hagerty UK, Below the Radar and Classic.com. The catalogue page does not display a lot number as of October 21, 2026, and the estimate may be revised before the sale. Interpretation about value is ours.