Is my Rolex Datejust real?

[ruthless]

Hey guys bought this Rolex Datejust with box and papers from a friend last year, he told me it is 100% authentic and I've known him a long time so trusted his word on it.

Didn't bother to check with a third party for verification until now.

Please help me identify whether this datejust is authentic or not. The serial number on the bottom of the watch is M213x80. I appreciate your help as this is the only Rolex watch left after my house was broken into last winter. Box and papers were stolen as well.

These were the best pictures I could take using my phone and I had to resize multiple times as well to cut the file size.
EDIT: Don't know why but the pictures are coming out all rotated wrong and I can't seem to fix the issue =S

Thanks for your time.