There's a beautifully unique double index at 12 o’clock for orientation. At 6 o’clock, you've the signature – as the Aquatimer are available in both of those tritium or Luminova variants, you’ll see both “T SWISS Produced T” and “SWISS Designed” signatures. A note around the tritium variations: IWC needed https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/