1mm. Although AP marketed the watch as “Additional-Thin,” admirers continued to consult with it as “Jumbo” provided its 39mm case. Other slight modifications incorporated a change from a white date wheel to the black Edition on the blue and black dials plus the addition of the double-deployant clasp on the https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/