Sold $40,000
1969 · Red · 44,000 mi
Sep 30, 2025 · Bring a Trailer
Alfa Romeo Spider Duetto
1966 to 1969 · Roadster · 6,325 built
A 1966 Alfa Romeo Spider Duetto cost $3,495 new. Over the past 12 months, 2 have sold publicly at a median of $30,391. The Shifty Estimate for a well-kept example is $26,300. Across the sales we have on file, prices ran from $5,000 to $97,000, depending on mileage, color, and history.
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Shifty Estimate
$26,300
Medium confidence · $16K to $44K
- Median · 12 mo
- $30,391
- Sales · 12 mo
- 2
- Market cap
- $166.3M · 6,325 built
- Original MSRP
- $3,495Up 653% since new
Collectible
Sold$35,783 · Car & Classic · Dec 2025
The market
Every recorded 1966 Alfa Romeo Spider Duetto sale, by date and price
May 2026 · Hemmings
$25,000 · 48,309 mi · Red
● Sold● Bid to, not sold
80 sales · 22 unsoldmedian $30kupdated May 2026
Community
Latest results
The newest 1966 Alfa Romeo Spider Duetto sales with photographs
Sold $9,000
1967 · White · 67,000 mi
Sep 4, 2025 · Bring a Trailer
Sold $19,069
1969 · Red · 74,000 mi
Jun 27, 2025 · Bring a Trailer
Sold $40,000
1966 · Red · 11,000 mi
Jun 11, 2025 · Bring a Trailer
Sold $47,300
1967 · SILVER
Jan 22, 2025 · Barrett-Jackson
Sold $39,700
£31,260
1969 · red · 38,027 mi
Jan 1, 2025 · Car & Classic
UK sales of this model ran 16% above US sales over 3 years.
Specifications
- Engine
- DOHC Inline-4, 1.6L
- Power
- 109 hp
- Torque
- 103 lb-ft
- 0 to 60
- 11.3 s
- Top speed
- 112 mph
- Transmission
- Manual
- Drivetrain
- RWD
- Curb weight
- 2,248 lb
- Production
- 6,325 built
- Original MSRP
- $3,495
- Designer
- Battista Pininfarina
Common questions
How much does a Alfa Romeo Spider Duetto cost?
A 1966 Alfa Romeo Spider Duetto cost $3,495 new. Over the past 12 months, 2 have sold publicly at a median of $30,391. The Shifty Estimate for a well-kept example is $26,300. Across the sales we have on file, prices ran from $5,000 to $97,000, depending on mileage, color, and history.
What is a 1966 Alfa Romeo Spider Duetto worth today?
The Shifty Estimate is $26,300. We rate confidence medium: 2 public sales in a year is a thin market, and the spread between them is wide.
Is a Alfa Romeo Spider Duetto a good investment?
It has appreciated 653% against its $3,495 list price. Only 6,325 were built. The caution is spread, not direction: across the sales we have on file, prices ran from $5,000 to $97,000, and mileage explains most of that.
How many Alfa Romeo Spider Duetto have sold?
Shifty has 81 public sales of the Alfa Romeo Spider Duetto on file. The earliest was on Jan 27, 2016.
What has a Alfa Romeo Spider Duetto sold for at auction?
The 3 most recent public sales we have on file:
- $25,000May 14, 2026Red · 48,309 mi
- $35,783Dec 28, 2025red · 8,320 mi
- $40,000Sep 30, 2025Red · 44,000 mi
About the 1966 Alfa Romeo Spider Duetto
The Duetto launched Alfa's most enduring design, with Pininfarina's flowing lines remaining virtually unchanged for over two decades. The original 1.6-liter twin-cam produced 109 horsepower, providing spirited performance wrapped in timeless Italian elegance. With 6,325 built during the first generation, the Duetto established the archetypal Italian roadster formula. The distinctive 'boat-tail' rear end and perfect proportions make it the most desirable Spider variant among collectors. Graduate immortalized the design in popular culture, but the Duetto's appeal transcends Hollywood. Rust remains the primary concern, making solid examples increasingly valuable. Original cars with matching numbers and proper colors command strong prices. The Duetto represents the purest expression of Alfa's spider philosophy, combining mechanical excellence with Pininfarina's masterful styling.
More Alfa Romeo in the market
Sales and listings
Showing 20 of 103 on file
1966 · Red · 48,309 mi
Hemmings
$25,000
May 14, 2026
1967 · red · 8,320 mi
Car & Classic
$35,783
£26,500
Dec 28, 2025
1969 · Red · 44,000 mi
Bring a Trailer
$40,000
Sep 30, 2025
1967 · White · 67,000 mi
Bring a Trailer
$9,000
Sep 4, 2025
1969 · Red · 74,000 mi
Bring a Trailer
$19,069
Jun 27, 2025
1966 · Red · 11,000 mi
Bring a Trailer
$40,000
Jun 11, 2025
1967 · SILVER
Barrett-Jackson
$47,300
Jan 22, 2025
1969 · red · 38,027 mi
Car & Classic
$39,700
£31,260
Jan 1, 2025
1967 · White · 41,000 mi
Bring a Trailer
$42,000
Dec 16, 2024
1968 · Red · 1,243 mi
Bring a Trailer
Bid to $37,600
Aug 6, 2024
1966 · Red
Bring a Trailer
$63,000
Jul 19, 2024
1969 · Red · 46,000 mi
Bring a Trailer
$25,000
Jun 16, 2024
1967 · Red · 48,000 mi
Bring a Trailer
$15,565
Jun 9, 2024
1967 · Red · 63,000 mi
Bring a Trailer
$40,000
May 29, 2024
1967 · Red · 11,000 mi
Bring a Trailer
$18,750
May 15, 2024
1968 · red · 252 mi
Car & Classic
$32,206
£25,750
May 2, 2024
1967 · Red · 85,000 mi
Bring a Trailer
$12,500
Mar 30, 2024
1967 · Red · 3,500 mi
Bring a Trailer
$80,000
Mar 11, 2024
1967 · red · 13,399 mi
Car & Classic
$42,740
£35,001
Nov 2, 2023
1967 · White · 49,710 mi
Bring a Trailer
Bid to $17,888
Oct 14, 2023
Free: the 2027 Collector Car Outlook.