There exists a wonderfully special double index at 12 o’clock for orientation. At 6 o’clock, you have the signature – as the Aquatimer are available in equally tritium or Luminova variants, you’ll see both equally “T SWISS Built T” and “SWISS Built” signatures. A Observe around the tritium versions: IWC https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/