If I see it correctly... the serial starts with 3XX... (sorry it wasn't clear in the picture..) It seemed to match with 280524CD code. I would say it should be genuine.
It is a 3 and thanks for your response? May I ask how you knew that they matched the 280524XD code? Thanks!
CD coded racquets are pretty safe... Also... http://www.badmintoncentral.com/for...2-Guide-How-to-Spot-Counterfeit-Yonex-Rackets http://www.badmintoncentral.com/forums/showthread.php/94521-New-Fake-Yonex-Rackets-Phenomenon