Today I learned that Rolexes have a crown etched into the crystal. Very faint, and not noticed without a bright light - I've only had it 2 years... : r/rolex
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Authenticity – oysterinfo
Did you know that around 2002 Rolex started laser engraving a crown in all the sapphire glasses? Every dot is in a different depth in the sapphire. : r/rolex