Swiss Made self lubricating Mainspring to fit Patek Philippe Movements. Please select the correct caliber for your watch from the drop down menu

60, 70, 80, 85, 86, 90, 16-250, 215, 175, 177, 23-300, 12-400, 28-255C, 320
  • Self lubricating top quality Mainsprings 
  • Swiss Made