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Postcard showing a steam locomotive of the Pacific type, model 231-516 DD, with a Schmidt superheater and ACFI reheater, intended for heavy express trains. The reverse details its technical specifications: cylinders 4, grate area 4.27 m², service weight 103,000 kg, and notes that it is part of the 231-501 to 783 series converted from 1934. The publisher is H. M. P., Paris, with a photograph by L. Vilain.