1965 Volkswagen 21-Window Deluxe Micro Bus

When the boxy Volkswagen Transporter arrived on American shores in 1949, its effect and influence was immediate. Using standard Beetle components, it was easy to maintain and was one of the best ways to move small groups of people.

Dubbed the "Micro Bus," Volkswagen's unique Transporter survived through the decades and evolved into several different vehicles. Its combination of economy and practicality made it a hit with the flower-power generation of the 1960s.

The rarest of the Micro Buses is the 21-Window Walk-Through, shown here. It was in many ways the Cadillac of VW buses, as it was adorned with lots of trim and amenities absent on other buses. The standard configuration provided a bench front seat, but the Walk-Through was fitted with two separate front seats so the passenger could walk to the back of the bus without exiting.

This two-owner, California black-plate, 31,000-mile, rust-free Volkswagen received a...