The Alfa Romeo Spider Series 1, often called the 'Duetto' or 'Osso di Seppia' (cuttlefish bone), debuted at the 1966 Geneva Motor Show. Designed by Pininfarina, its iconic boat-tail styling was made famous by its appearance in the 1967 film 'The Graduate'. Most cars were fitted with Alfa's brilliant 1.6L twin-cam four-cylinder engine and a 5-speed manual transmission, with a 1.3L Junior version added in 1968.
Collectors prize the Series 1 for its pure design, which was replaced by a less elegant Kamm tail in the subsequent Series 2. The car's cultural significance, combined with a classic Italian driving experience, makes it a highly desirable roadster. It's the original and arguably the most beautiful version of a model that stayed in production for nearly 30 years.
The market for these Spiders is mature, with a wide delta between project cars and top-tier examples. The average price of around $35,000 typically buys a solid driver-quality car. Fully restored, concours-level cars regularly break the $100,000 barrier, while basket cases can be found for a few thousand dollars, but buyers should be wary of extensive rust repair costs.
Buying Tips
- Rust is the primary concern. Inspect the rocker panels, floor pans, wheel arches, and spare tire well for corrosion or poor repairs.
- The twin-cam engine is robust, but check for records of regular oil changes. Blue smoke on startup or overrun can signal worn valve guides or piston rings.
- Test the 5-speed gearbox thoroughly. A weak 2nd gear synchro is a common and expensive issue, so listen for grinding on the 1-2 upshift.
- Verify originality. Many cars have had their complex and expensive original Weber carburetors swapped for other units. The correct boat-tail and trim are essential for top value.
- Check the condition and operation of the soft top. A worn frame or torn fabric can be costly to replace, and a poor fit will lead to leaks.
Prices range from $2,100 for major projects to over $104,500 for concours-quality examples.
467 Alfa Romeo Series 1 vehicles have been tracked across auctions and listings on Hypercars, with 47 currently live.
Data sourced from Bring a Trailer, Cars & Bids, eBay Motors, PCarMarket, and Collecting Cars. Updated daily.
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