Bob's Watches - What year did Rolex begin micro-etching a tiny crown logo at the 6 o'clock position on the crystal that protects the dial? — More details on BobsWatches.com | Facebook
What is the best way to see the laser engraved crown on the crystal | WatchUSeek Watch Forums
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
Luxury Watch Hidden Easter Eggs | Bob's Watches
Laser Rolex Crown | Replica Watch Info
Laser-Etched Crystal, real or fake? - Rolex Forums - Rolex Watch Forum