Hi guys, I just bought a Titleist 910 hybrid 21 degree from eBay, when I received it I noticed that there is no series number or security sticker on the shaft or the head. As for the sticker probably it's because it's not stock shaft, but I can't find the series number either on the head which worries me. Here are some photos of the club, could any of you experts help me out here?

Many thanks