There exists a beautifully unique double index at twelve o’clock for orientation. At six o’clock, you might have the signature – since the Aquatimer are available in both tritium or Luminova variants, you’ll see both “T SWISS Created T” and “SWISS Built” signatures. A Notice about the tritium versions: IWC https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/