Like several other Full Classic marques, the supercharged eight-cylinder Mercedes-Benz models of the late 1930s were all almost entirely fitted with coachwork by the manufacturer’s own Sindelfingen coachworks.

Factory coachwork was successful in being both attractive and well-built, thus in the case of the 500 K model, of which 342 chassis were constructed, only 41 of those were sold as bare chassis to be clothed by outside coachbuilders, and perhaps only ten or so of those received bodies by British coachbuilders.

One of those surviving British-bodied Mercedes is the rather extraordinary automobile offered here, which in the slippery audaciousness of its full-figured curves outshines many of the best-recognized factory cabriolets and roadsters produced by Sindelfingen.

A HERO’S 500 K Chassis number 123699 features a one-off body crafted by the renowned old British firm of Windovers, and it is one of two similar bodies fitted by Windovers to the 500 K chassis.

Best-remembered for t...