The last of the 'big Healeys' – an Austin-Healey 3000 MkIII – is expected to fetch up to £90,000 when it goes up for auction next month.
The car, which was built in December 1967 and was the last example to roll off the production line, has been in the custody of its current owner for the past 45 years and is in near-mint condition.
Much of the 57,000-mile car's history is included in the sale, with a Heritage Certificate and documentation that proves its status.
The car will go under the hammer at the Classic Car Auctions (CCA) sale at the Practical Classics Car and Restoration Show, which takes place at the NEC in Birmingham on April 1 and 2.
Speaking ahead of the auction, Richard Greenhalgh, classic car specialist at CCA, said: "This has got to be the most significant, 'road-going' big Healey on the market today and as such represents an amazing opportunity for classic car collectors. The car has great shut-lines, a deep shine and lots of detail.
"This is the first time the car has been offered for sale in over 40 years and as such an important and iconic British sports car we expect a significant amount of interest."