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Héraldique de Luxembourg
The arms were granted on January 6, 1971.
The arms are much older though, and were already used by the medieval Lords of Differdange. They descended from the Lords of Soleuve, who used a black lion in a silver field.
The arms on a road sign
Literature : Loutsch, J-C. et al.; Armorial communal du Grand-Duché de Luxembourg, Fisch, Luxembourg, 1989, 331 p.