April 23 marked Bonhams’ 29th collector car auction in Monaco, and once again the sale took place in conjunction with the Monaco Historic Grand Prix. Held at the glitzy Fairmont Monte Carlo right between the Monte-Carlo Casino and the waters of the Mediterranean, the auction started with a decidedly un-glitzy but quite clean collection of six Honda Z50 “Monkey” motorcycles, then followed with 25 European sports, luxury, and racing cars.
Of those 25 cars, 15 sold and were led by the ultra-rare Isdera Imperator supercar at €690,000 ($832,761). The sale’s headliner, a rebodied 1936 Delahaye 135 S with period race history, hammered not sold at €650,000 ($784,485). We take a detailed look at the Isdera below, plus an Aston Martin convertible, a Porsche 911 Carrera RS 2.7, a V-6 Maserati, and an oddball Fiat beach car (no, it isn’t a Jolly).