Only nine times in his seventy-eight years did Jean-Baptiste-Camille Corot paint on anything other than canvas, paper, and panel. On one occasion, offended by the crude wooden lunchbox carried by his friend Alfred Robaut, Corot had a new one constructed, which he decorated with a plein air painting, "Fraîcheurs matinales" ("Morning Freshness"). It’s a mini-masterpiece made all the more charming by its humble setting, a breezy landscape of trees and hills awash with sunlight and enlivened by one of Corot’s favorite motifs: a flash of red, the hat of a small figure coming over a rise. Host Ben Miller gets the story from the dealer who sold it, Jill Newhouse, and the collector who bought it, Ray Vickers.

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