1mm. Though AP marketed the watch as “More-Thin,” admirers continued to seek advice from it as “Jumbo” offered its 39mm case. Other slight alterations incorporated a swap from a white day wheel to your black version over the blue and black dials and also the addition of a double-deployant clasp https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/