Please HELP checking my new Rolex Submariner

[mechta]

Hey guys,

I just found this forum today and joined.
I've recently got a used submariner 116610LN around my location,
dealer was 100% confident about the authenticity of the watch
but as you know, there are even more replica ones than genuine out there and wanted to get help from you guys checking this and to make sure if there's no problem with mine.
Would you guys please be able to take a sharp look and check ?

Both serial #s on guarantee card and engraving match,
Country code : 888 (looks like Hong Kong)
1st invoice date : Apr. 2013

Thanks!!!