I'm guessing it's real TY because you said it's unbranded and shiny, came from the US and the media code looks real compares to what I found in the media forum. You can ask your pal where did he bought it, if from rima.com or supermediastore it will be real TY.
In any case, I would check dismembered_ninja and terminalvelocd suggestion to look at the inner-hub ring and find an 8 digits serial number that starts with something like Gxxxxxx. You need to look under a bright light. Just for reference, T02 has serial starts with TGxxxxxx; and TYG02 -- GGxxxxxx. I'm not sure with TYG01.