In the past five years, the value of a Series 2 in excellent condition has risen 20 percent, according to Hagerty data. For a Series 2 in generally good driving condition, values are up 12 percent over the same period.

Where to Find Them

The world record sale price for an Alfa Romeo Series 2 Spider stands at a paltry (relatively, when collector cars are concerned) $31,900, which a Series 2 took at a Bonhams sale in 2015. Other, much older Alfa Romeos are worth quite a bit more.

That Spider earned its sum for its enviable racing heritage and low mileage, plus the rarity of its livery and trim. A well-driving, good-conditioned Series 2 Spider can be had for less than $20,000.

Such websites as Hemmings and Auto Trader list prime examples, such as this one from 1981 ($11,500). But if you really want to find something solid, start following web discussion boards run by the Alfisti, or true aficionados of Alfa culture. Brand devotees will inevitably understand and care better for their cars than dilettantes—which benefits the buyer when the enthusiast decides to sell.

“The best place to look for Alfa Romeos is the enthusiast forums,” Valenzuela said, who recommended Alfabb.com as the best site to case. “Instagram and hashtags have made it really easy to learn about the cars in a short amount of time, so you can see a lot and get educated on social media.”

How to Buy Smart
As with many classic Italian roadsters, which are lovably quirky to drive, Alfa Romeos can be temperamental about their sophisticated mechanics, and the brand lacks a meaningful dealer network stateside. To make matters worse, cars with modest values like these often don’t receive the same tender care to begin with that six-figure collectible cars enjoy.

The key for the beginning buyer is to take the time to find an example with a strong track record of maintenance, Klinger said.

“This is a car that you want to seek out the best example you can possibly afford,” he said. “If the car needs some work, you can very quickly overspend what the car is worth.”

In short, before you buy anything, get a detailed, thorough inspection of the car, especially focusing on rust and chassis damage. Put it on risers in the garage. Look for damage to the frame, to the electrical components, to the interior seating and trim. Be patient until you find an example that exudes confidence from a service perspective.