Matthieu Lamoure, a specialist at auction house Artcurial, discovered the cars, reported CNN.
The cars are a 1937 Bugatti Type 57 Cabriolet, a 1932 Bugatti Type 49 Saloon, and a 1929 Bugatti Type 40 (as well as a 1925 Citroel 5HP Cabriolet).
The cars were discovered in 2018 after being contacted by the family of the late Dutch-born artist August Thomassen, who collected the cars during his lifetime.
Speaking about it, Lamoure said in a video about those cars, Clearly, this is the stuff of dreams and as it’s a Bugatti, it’s even more magical.
He said that the cars had been stored away, untouched, in the barn since the late 1950s. According to Lamoure, his team had to remove 200 sandbags to find the entrance of the garage.
Thomassen, whose bust of Bugatti founder and designer Ettore Bugatti now resides in the National Automobile Museum in Mulhouse, France, was more interested in the aesthetic beauty of the cars rather than the urge to drive them, the auction house said in a statement. So the vehicles remain in relatively unused condition, aside from some deterioration gained through time.
The cars will go under the hammer in the Retromobile 2019 collector’s car sale in Paris on Friday.