The engraved laser logo at the inside of Rolex sapphire crystal is Rolex flying saucer, some have seen it and some says it never exist.

It's very hard to find and is a great way to see if it's a genuine Rolex crystal at the watch.

It's on every modern sport Rolex except the Milgauss GV with the green crystal.

It should be at the 6 o'clock position but there is no date models that have it on other positions.

It looks like dots when you look at it with a loupe but it's small stars in different angles and deep at the crystal.

In 1999 Rolex put a laying S at the coronet at the replacement crystal so they could see if the crystal was canged or the original one.

10 years later they stop produce the S crystals and only have one model of laser logo today.

Here is a service crystal and I guess those will go to a higher price in 2030 than the regular.

Now there is 3 new logos at the sapphire crystal.