Cannot tell if it was authorized but it came with the Victor stringing instructions and warranty book. We were looking at an Yonex Arcsaber the day after and the seller told us that one is fake. Mine was real.
The second one I broke was bought was in a shop in Ireland, who are based in a hall in the capital where the top club plays (the owner was a former Irish international). Racket was €5 more expensive than what I paid in Beijing. They've been selling tennis and badminton equipment, stringing services for over 10 years.
Both rackets broke at the same place so I believe both are real..