What Make and Model is the Linus Larabee Private Jet in the movie Sabrina?

In the movie "Sabrina," the Linus Larabee private jet is depicted as a sleek, luxurious aircraft, specifically a 1950s model of the Douglas DC-6. This aircraft symbolizes the wealth and sophistication of the Larabee family. The film uses the jet to emphasize the contrast between the characters' affluent lifestyle and Sabrina's more modest background.