You will find there's incredibly distinctive double index at 12 o’clock for orientation. At six o’clock, you've the signature – since the Aquatimer are available in equally tritium or Luminova variants, you’ll see the two “T SWISS Manufactured T” and “SWISS Designed” signatures. A note over the tritium variations: IWC https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/