Rolex

A very close friend of mine, want to buy his first rolex. Upon inspection, he found a little "dot" (bubble) near the "6" . Definitely not a dust. Is this a defect (paint bubble)? Something suspicious of fake dial? Everythig else is OK, including the seria...  

AFAIK a bubble paint usually only happen in lacquered dial, not sunburst dial

This might be the rare 'dot to left of 6 above Swiss' dial!

I made a quick call to the Rolex AD put here and later on sent him screenshot. It’s not normal and not supposed to be there. Will it affect future value? Could be, in short term probably negative but in the long run it could very well turn out positive as... 

Actually the price is decent and quite low, but my friend does not think too much about the price; he thinks more about the flawlessness of the dial. So he passed it, after heard my suggestion.

and verify that it is in the hope that it is only some particle of dust that is on the dial and not a problem with the dial itself, if it were a particle on the dial the questions would be how did it get there, that is more difficult to explain It could e... 

He only showed that the serial number between the lugs is correct according to the papers. Anyway, my friend has let this go, as he is looking for flawless dial. It is his first rolex, so I understand he needs a good experience in the beginning