Do you think my m50 is fake? What made me think they were is because the "R" logo and the "Audio Technica" logo is not perfect. The R logo is not centered and the "Audio Technica" is slanted slightly at the headband. I also got the folded chinese manual too. I bought mine from Kijiji.
Here are the pictures of my headphone.
Those headphones have a green board but mine is yellow.
They look pretty legit to me. Did you get them new in box? Is the registration card yellow and printed on thicker paper? Is the recycling instruction sheet on a sort of glossy paper?