There's a wonderfully special double index at 12 o’clock for orientation. At six o’clock, you've the signature – since the Aquatimer can be found in equally tritium or Luminova variants, you’ll see equally “T SWISS Designed T” and “SWISS Built” signatures. A Be aware around the tritium variations: IWC required https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/