An iconic piece of French luxury craftsmanship, this vintage S.T. Dupont Ligne 1 BS (Briquet Standard) large model features the highly sought-after Diamond Head (Pointe de Diamant) guilloché pattern in a brilliant silver-plated finish. Model: Ligne 1 BS (Briquet Standard, Large / BSG) Finish: Silver-plated with Diamond Head pattern Condition: Excellent aesthetic condition with crisp pattern edges and light signs of age/handling. Please review pictures for detailed visual condition. Functionality: Fully tested and in 100% working order—no gas leaks, reliable flame mechanism, and smooth strike wheel operation.