1mm. Although AP marketed the watch as “Further-Thin,” followers ongoing to seek advice from it as “Jumbo” supplied its 39mm case. Other slight alterations included a switch from a white date wheel to your black Variation around the blue and black dials as well as addition of a double-deployant clasp https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/