You will find a beautifully distinctive double index at twelve o’clock for orientation. At six o’clock, you've the signature – since the Aquatimer are available in the two tritium or Luminova variants, you’ll see each “T SWISS Manufactured T” and “SWISS MADE” signatures. A Observe on the tritium versions: IWC https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/