One of the most desirable variations of the Hermann Ahrens-designed Mercedes-Benz 300 is the grand Cabriolet D, one of the final four-door cabriolets produced by a European automaker.

Versions were produced on all of the 300 chassis variants, with the example offered here being an early production model on the original 300 chassis.

Highly innovative for a large luxury car of its time, it features a 115 brake horsepower overhead-cam, six-cylinder engine, mounted on a racing-inspired tubular frame with independent suspension at all four corners.

The result was a luxury car with a wonderful ride and handling for a large automobile of the period.

This Cabriolet D has been owned by the consignor for roughly a decade, and underwent a restoration by German specialists between 2011 and 2012; receipts for much of the work are on file.

Finished in its factory-correct shade of Crème over a red interior and black top, a classic combination for the model, it is equipped with a push-button radi...