Ray-ban experts thank you!?

I bought ray bans last year and recently decided to wear them while I mow the lawn. I took them off and some of the markings sweat off on what i would call the legs.haha. They are real aviators that I bought from Macys for 155. I was just wanting to know if thats ok. I dont want people saying those are fake! half the markings are gone. hah.