S.T. Dupont - Diamond Tip D57 Rare - Lighter - Gold-plated

The designation "Dupont L1 D57" refers to an early S.T. Dupont gas lighter series, a transitional model between the older petrol lighters and the later Ligne 1 models. The "D57" signifies the introduction of the gas lighters in the early 1950s, which featured a unique flame adjustment mechanism. The "L1" stands for "Ligne 1," a further development of the series that built upon the D57 but did not yet represent the final form of the later, more elegant models.