You will find there's splendidly distinctive double index at 12 o’clock for orientation. At six o’clock, you've the signature – as the Aquatimer can be found in equally tritium or Luminova variants, you’ll see each “T SWISS Produced T” and “SWISS Built” signatures. A note within the tritium variations: IWC https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/