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Illustrated postcard showing locomotive No. 3-1101, a 4-cylinder Compound model with Schmidt boiler (Belpaire firebox), with 3 coupled wheels between 2 bogies, built in 1910-11 for heavy express trains. The reverse indicates the publisher F. F. Paris and provides technical specifications such as the boiler surface area (385.74 m²) and total weight (113,000 kg).