There's a wonderfully distinctive double index at 12 o’clock for orientation. At six o’clock, you've the signature – as the Aquatimer can be found in both tritium or Luminova variants, you’ll see both of those “T SWISS Manufactured T” and “SWISS Created” signatures. A Notice within the tritium variations: IWC https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/