It could be. Someone could make a toon with that name and make a sash. Especially since it was sold for 50k...
If someone had made a char under that name, it wouldnt have said "Greetings From EM..."
It sounds like he just got lucky and got a real good buy. Theres no way possible for any char to rename the sash to say Greetings from...
So to answer the OP, its not a fake, and you got a damn good buy.