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Black and white view of the Notre-Dame d'Espérance cave in Établès, Brittany, framed by rocky cliffs with a calm sea in the background. The reverse has handwritten text addressed to 'Mademoiselle Mme Blanchon à Toussaint' in Fécamp, with a 10-centime postage stamp and a postmark from 'Toussaint' dated 31 May 1907.