This 1960 Enzmann 506 Spider is one of two ever produced with a retractable fighter-plane-style hardtop by Dr. Emil Enzmann, whose Swiss family ran a local garage servicing mostly Fiats and Citroens. Enzmann’s entrepreneurial design is based on a VW Beetle chassis, and is formed in fiberglass to save weight, and was intended to race against the Porsche 1.3 liter cars. The seller says that 34 were made and this is #28. Find this one here on eBay in Anaheim, California with a Buy-It-Now of $177,385, or offer. Special thanks to BaT reader Doug K. for this submission!

This lightweight, 1100 lb monoque body has evidence of styling cues borrowed from the 550 Spider, Karmann Ghia, and perhaps even from Abarth, with the cowl hood above the rear-mounted engine. The seller says that upon meeting Dr. Enzmann in person, he asked why only two of these sliding-roof examples were made, and was told that they took over 2 weeks to create a watertight seal between the windshield and roof surround, and had to continue with a more practical design.

The seller describes that they wanted to maintain the originality of the car without restoring it, and opted to make the car safe mechanically by addressing the master cylinder, brake shoes, hoses, and cylinders, as well as the tires. The interior, as seen below from when the car was pulled out of storage, looked remarkably clean. -The simple yet well-trimmed dash has flattering lines that flow into the hand-built coachwork, and the flat Nardi steering wheel suits the interior well.

The engine is a TSV Okrasa 1300 with a forged stroker 69mm chromoly crankshaft, big valves, with twin dual port heads fed by dual Solex carbs, which helped keep up the fight against the 1300cc and 1500cc cars. Although there isn’t a clear picture of the engine in its current condition, it appears to be tidy from what we can see, and we can imagine how much it would make the lightweight car dance around the track.

It will be interesting to keep tabs on this car and see if it ever changes hands. These are rare cars but at this price point pretty much any Volkswagen-based vehicle can be yours, as well as many very impressive Porsches.