Probably the 1962 150S that was modified by surrealist artist Salvador Dali. The bike belonged to a student but Dali painted it up with the name of his muse and partner, Gala,
and added his own very distinct signature.
It’s on display in the Vespa museum in Pontedera and is considered to be the most valuable Vespa in the world.
Although Vespa were selling 60,000 scooters a year by 1950, they only really started being viewed as cool in 1953 when Gregory Peck and Audrey Hepburn zipped around on a Vespa in Roman Holiday. The movie led to 100,000 units being sold the following year and when James Dean, John Wayne, Marlon Brando and Charlton Heston were pictured on Vespas, there was no turning back.