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Designed by Marcello Gandini of Bertone, it was created to supply Ferruccio Lamborghini with a true four-seater car for his lineup which already included the 400GT 2+2 and the Miura. It was distinguished by amply glazed gullwing-doors and an equally amply louvered rear window. Propulsion was by a 2L 175 bhp (130 kW) in-line six engine, actually a split-in-half version of Lamborghini's 4L V12, mated to a five speed transmission.
The Marzal remained a one-off, though the general shape and many of the ideas would later be used in the Lamborghini Espada. The Marzal design probably found wider recognition as a die-cast model, with both Dinky Toys and Matchbox making scale models, albeit in other colours such as orange, despite the original show car being painted silver. This car was publicly driven only once, by Princess Grace and her husband, as the Monaco Grand Prix pace car the same year it was designed.
The Marzal made a second public appearance at the 1996 Concours Italiano in Monterey, California in honor of Carrozzeria Bertone. The Lamborghini Athon was also exhibited at this time. The Marzal was located for a long time in the Bertone Design Study Museum, and it was sold in auction at Villa d'Este (Italy) on 21 May 2011, for the highest bid of 1,350,000 Euros, approximately 2 million dollars.