Here's my 2 cents ( and believe me all it's worth). I have an original chain ring. This one looks good but a couple red flags. One is the "sharp" (worn?) teeth. Seen that on re-pops. They usually square off more. The other is all the "imperfections" in the letters that the originals have, are present, but look's like filed to produce those imperfections. Also the head badge looks good, but the inner middle texture looks a little uneven in wear. If somebody did "fake" this bike they went to a lot of trouble, but for fifteen grand they mite have. I have seen vintage Fender guitars that were faked with patina and almost indistinguishable from a $30,000 original. It's a crazy world out there.