is this 116518LN "Pikachu" authentic?

[fzuleta]

Hi, hopefully Im posting in the right place,

I bought this Rolex 116518LN on chrono24, and was inspecting it as soon as I received it, everything is looking well, except this microscopic image taken on an electronic microscope, and not sure how to handle this, should I return to seller? ask for warranty? or is it a normal thing with such tiny things?


thank you in advance, I appreciate your comments