The painting, depicting a scene from the New Testament, disappeared after its last exhibition in 1945 and was recently located in a private collection by art historian Francesca Bardazzi, the BBC said Thursday.
Bardazzi dated the painting to between 1860 and 1870. Cezanne is considered a major influence for many 20th century artists and art movements, particularly Cubism.
The piece will be shown as part of an exhibition of Cezanne's work at the Palazzo Strozzi in Florence.
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