2 lighters: I followed the manual but can't find much on the first, is this a genuine St Dupont? Unfortunately the second one is obviously fake 🥲 : r/STDupont
The Lighter Library - Lighter Repair Manual
How to fix/service/repair gas leak on S. T. Dupont Ligne/Line 1 BS lighters(seals-replacement) - YouTube
S T DUPONT 025002 Big D Black Lacquer and Gold Lighter User Manual
Prometheus Lighter Maintenance Guide | Prometheus International, Inc.