1mm. While AP marketed the watch as “More-Thin,” admirers ongoing to consult with it as “Jumbo” supplied its 39mm situation. Other slight variations provided a switch from a white date wheel to the black Model over the blue and black dials and also the addition of a double-deployant clasp on https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/