yinzerniner - the globe symbol is laser etched, but having seen hundreds of these in person (on a wide variety of watches), they are all not exactly the same in appearance, and depth of engraving can vary.
I have a lot of experience with laser marking in an industrial setting - as a project engineer in my "old life" I spent millions on laser marking systems at $250-$300k per system, ran them off at the manufacturer, installed them in production lines, and trained people how to use and maintain them. These were used to mark steel parts and I know that varying conditions can change the look of the mark quite substantially. Not just changing parameters like Q-switch settings, lasing speed, or focus of the beam, but degradation of the lasing medium, age of the lamp, cleanliness of the mirrors and/or lasing cavity, condition of the coolant, etc. can all have an impact over time on the appearance of the mark.
If the watch has been serviced or not is a valid point, but separate from the issue of authenticity. I agree seeing the same serial number on the lugs would be a good idea just to make sure it matched.
Cheers, Al
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