📅 Monday, September 7, 2026
Starting in the early 2000s, Rolex began laser-etching a microscopic coronet logo at the very bottom edge of its sapphire watch crystals at the 6 o’clock position. This subtle security feature is so small that it is virtually invisible to the naked eye and requires a magnifying glass or a strong side-angle light to spot. It serves as an ingenious anti-counterfeiting measure, though modern replica makers have since attempted to copy even this microscopic detail.
Category: Fun Quirk
Disclaimer: Every effort has been made to keep these watch facts accurate, but the world of horology is full of myths, disputed stories, and fascinating trivia. Consider these facts a starting point for discovery rather than the final word. If you have corrections or additional insights, let us know—we’re always happy to keep the record ticking in the right direction.
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