Bonhams Bonmont Auction 2025 - Ferrari and Porsche in demand

Name: Porsche 930 Turbo Targa Flachbau 1988
Brand: Porsche

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Created on June 30, 2025

Text:

Bruno von Rotz

Photos:

Bonhams

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Bugatti Baby II Collectors' Car (2023) - as lot 101 at the Bonhams Bonmont Auction 2025

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Ferrari 250 TR Testa Rossa Collectors' Car (2022) - as lot 102 at the Bonhams Bonmont Auction 2025

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Ford Capri 2000 GT XLR Coupé (1970) - as lot 103 at the Bonhams Bonmont Auction 2025

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NSU Wankel Spyder (1966) - as lot 104 at the Bonhams Bonmont Auction 2025

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Allard K1 Tourer (1947) - as lot 105 at the Bonhams Bonmont auction 2025

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Ford Escort Monte Carlo (1971) - as lot 106 at the Bonhams Bonmont Auction 2025

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Mercury Colony Park Station Wagon (1963) - as lot 107 at the Bonhams Bonmont Auction 2025

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Aston Martin Vanquish S Coupé (2007) - as lot 108 at the Bonhams Bonmont Auction 2025

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Lamborghini Gallardo Superleggera Coupé (2007) - as lot 109 at the Bonhams Bonmont Auction 2025

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Ferrari 575 Superamerica (2005) - as lot 110 at the Bonhams Bonmont Auction 2025

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Ferrari Dino 246 GTS (1974) - as lot 111 at the Bonhams Bonmont Auction 2025

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Ford Fairlane 500 Hardtop, 'Bill Humphrey Thunderbolt' Recreation (1963) - as lot 112 at the Bonhams Bonmont Auction 2025

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Mercedes-Benz 220 SE Coupé (1959) - as lot 114 at the Bonhams Bonmont Auction 2025

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Chevrolet 327/365hp Corvette Coupé (1965) - as lot 115 at the Bonhams Bonmont Auction 2025

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Austin-Healey 100 BN2 Roadster to 100M Le Mans Specification (1955) - as lot 116 at the Bonhams Bonmont Auction 2025

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Porsche 911 930 Turbo Targa 'Flat Nose' (1988) - as lot 117 at the Bonhams Bonmont Auction 2025

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Spyker C8 Spyder (2014) - as lot 118 at the Bonhams Bonmont Auction 2025

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Aston Martin Valkyrie (2022) - as lot 119 at the Bonhams Bonmont Auction 2025

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Ferrari 612 Scaglietti (2004) - as lot 120 at the Bonhams Bonmont Auction 2025

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Ferrari 488 GT3 Competition Coupé (2018) - as lot 121 at the Bonhams Bonmont Auction 2025

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Intermeccanica Italia Spyder (1971) - as lot 122 at the Bonhams Bonmont Auction 2025

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Porsche 911 3.0-Litre Carrera Coupé (1977) - as lot 123 at the Bonhams Bonmont Auction 2025

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Ferrari 599 GTO (2010) - as lot 124 at the Bonhams Bonmont Auction 2025

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Ferrari 812 GTS Hardtop Convertible (2022) - as lot 125 at the Bonhams Bonmont Auction 2025

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Bugatti Type 57 Berline (1936) - as lot 126 at the Bonhams Bonmont Auction 2025

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Ford GT Carbon Series Coupé (2021) - as lot 127 at the Bonhams Bonmont Auction 2025

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Porsche 912 Coupé (1965) - as lot 128 at the Bonhams Bonmont Auction 2025

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Citroën DS 23 Pallas IE Saloon (1972) - as lot 129 at the Bonhams Bonmont Auction 2025

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Bentley S1 Continental Sports Saloon (1956) - as lot 130 at the Bonhams Bonmont Auction 2025

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Bentley S3 Continental Sports Saloon (1964) - as lot 131 at the Bonhams Bonmont Auction 2025

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Innocenti Mini Cooper 1300 Sports Saloon (1974) - as lot 132 at the Bonhams Bonmont Auction 2025

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BMW Z8 Roadster with Hardtop (2001) - as lot 133 at the Bonhams Bonmont Auction 2025

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Ferrari F355 Spider (1997) - as lot 134 at the Bonhams Bonmont Auction 2025

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Jaguar XK120 Fixed Head Coupé (1952) - as lot 136 at the Bonhams Bonmont Auction 2025

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MG TD 'Arnolt' Coupé (circa) (1953) - as lot 137 at the Bonhams Bonmont Auction 2025

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Porsche 911T 2.0-Litre Targa (1969) - as lot 138 at the Bonhams Bonmont Auction 2025

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Alfa Romeo Giulia 1600 Spider (1962) - as lot 139 at the Bonhams Bonmont Auction 2025

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Jaguar E-Type Series 3 V12 Roadster (1973) - as lot 140 at the Bonhams Bonmont Auction 2025

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Aston Martin DB5 Sports Saloon (1964) - as lot 141 at the Bonhams Bonmont Auction 2025

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Bentley Continental T Coupé (2001) - as lot 142 at the Bonhams Bonmont Auction 2025

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Rolls-Royce Silver Cloud III Drophead Coupé (1966) - as lot 143 at the Bonhams Bonmont Auction 2025

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Lamborghini Aventador LP700-4 Coupé (2013) - as lot 144 at the Bonhams Bonmont Auction 2025

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Porsche 924 Carrera GT Coupé (1981) - as lot 145 at the Bonhams Bonmont Auction 2025

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Porsche 928 S4 Coupé (1988) - as lot 146 at the Bonhams Bonmont Auction 2025

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MG B GT Coupé (1972) - as lot 147 at the Bonhams Bonmont Auction 2025

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Summary

On June 29, 2025, Bonhams auctioned 46 cars and a good dozen automobilia on the Bonmont golf course near Geneva in midsummer temperatures. Just over half of the cars were sold directly, on average for almost CHF 232,000 or EUR 248,000. The most expensive car to find a new owner was a Ferrari 275 GTB/4. This auction review analyzes the results and shows the vehicles in pictures.

This article contains the following chapters

43 years old on average
Ferrari and Porsche most sought after
Highlight Ferrari 275 GTB/4
Porsche 930 Targa Flachbau exceeds expectations
Interesting bargains
Some cars unsold

Estimated reading time: 3min

Preview (beginning of the article)

On June 29, 2025, it was the height of summer in Switzerland, with temperatures on the Bonmont golf course near Chéserex near Geneva well above 30 degrees. The participants in the Bonhams auction also felt the effects of this, which is why cooling champagne was served in the bar. But the auctioneer in the yellow dress remained cool, even when the microphone started failing. The 46 vehicles on offer, two of which were on a slightly smaller scale, were just under 43 years old on average and were valued at just over CHF 13 million in total in the run-up to the auction. 26% of the cars were offered without a reserve price.

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