11 of 4,352 chassis match · showing 1–11 · sort: Highest price · Oldest first · Clear filters

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  1972 Porsche 911 Carrera RS 2.7 pre-production prototype

  9113600012prototypeGermany

  2.7L flat-six

  Signal Yellow

  Sold US$1,325,000 · RM Sotheby's
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  1959 Maserati 3500 GT Spyder (Vignale prototype)

  AM101.678prototypeItaly

  3.5L inline-six, detuned from the 350S sports-racing unit

  Medium blue ('Blue Medio')

  Sold US$1,025,000 · RM Sotheby's
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  1968 Maserati Ghibli Spyder prototype

  AM115/S 1001prototypeItaly

  4.7L V8 dry-sump, 310 hp, Weber carburetors, with twin-spark-ready cylinder heads

  Giallo (yellow)

  Sold US$990,000 · RM Sotheby's
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  1964 Porsche 901 Cabriolet prototype

  13360prototypeGermany

  2.0L air-cooled flat-six, SOHC, Solex carburettors, 130 bhp

  Signal Red

  Sold €649,600 (≈ $715K) · RM Sotheby's
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  1972 Porsche 911 Carrera RS 2.7 development prototype

  9112301609prototypeGermany

  2.7L flat-six with Bosch mechanical fuel injection, ~210 bhp (prototype unit)

  Fluorescent yellow

  Estimate US$700,000 – US$900,000 · RM Sotheby's
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  1954 Porsche Type 597 Jagdwagen

  597/0005prototypeGermany

  1.5L air-cooled flat-four, four-speed manual, derived from 356 with reliability-focused tuning

  Olive green

  Sold US$665,000 · RM Sotheby's
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  1967 Maserati Mexico Frua Prototype (AM112 001)

  AM112 001prototypeItaly

  4.2L V8 DOHC, four Weber 38 DCNL5 carburetors, ~255 bhp

  Amaranto (dark red)

  Sold US$346,500 · RM Sotheby's
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  1975 Porsche 911 Turbo Carrera (Type 930) pre-production prototype

  9306800014prototypeGermany

  3.0L air-cooled flat-six, single turbo, Bosch K-Jetronic fuel injection, 234 bhp

  Oak Green Metallic

  Sold US$341,000 · RM Sotheby's
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  1965 Porsche 911 2.0 Coupé

  300474prototypeGermany

  1,991cc air-cooled flat-six, single overhead camshaft, 130 bhp

  Bali Blue

  Sold £265,000 (≈ $331K) · 2023-12-15 · Bonhams
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  1969 Porsche 911S Coupé

  119301099prototypeGermany

  2.2L flat-six, fuel-injected, Type 911/02

  Tangerine (code 6809 'Blutorange')

  Estimate €250,000 – €350,000 · RM Sotheby's
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  1963 Maserati Mistral Coupé

  AM101 960prototypeItaly

  3.5L DOHC inline-six, triple Weber 42DCOE carburettors, 235 bhp

  Estimate £195,000 – £235,000 · RM Sotheby's