This 1957 Porsche 356A 1600 Speedster is set to go under the hammer after spending the past 40 years locked in a garage.

The classic Porsche had spent the past four decades in a lock-up approximately one hour outside of Chicago. The original owner passed away five years ago, and a family friend bought the car from his estate earlier this year.

Often, these long-forgotten cars emerge from their hideaways with nature having taken over. However, this example appears to be in need of nothing more than a good clean and is totally original.

While stored, the roof was left up to avoid any nasty wrinkles forming, and the windows were left in place. This combined to ensure that the beige interior was well preserved. It shows no signs of wear or tear, comes with the original Porsche steering wheel and even a cigar lighter.

It also has the original tonneau cover for protecting the interior when the roof is down, while the original convertible boot is also present.

The Porsche Certificate of Authenticity shows that the car was completed on 5 March, 1957. The option list shows that it was painted in Aquamarine Blue Metallic and was fitted with the seats from the coupe variant.

Auctions America, the company behind the sale, says that the original paint is still on the vehicle and only needs a polish to return to ‘presentable’ condition.

This incredibly rare, totally original Porsche Speedster will be auctioned off on 5 November in South Carolina, with an estimated price of $200,000 to $250,000 (£157,000 to £197,000).