I found a Bobby Hull signed hockey stick in my attic. Is it real? Please read on...?

I found this in the attic of our garage. It is stamped "LEFT" and "BOBBY HULL MODEL" and has his signature above it. Do you know if they made sticks with his signature stamped on it in stores? Would it be from a game where you bouhgt a stick to have signed? The ink used to stamp the stick name looks like the same as the signature. I don't know. I know I need to take it to an appraiser but I'm wondering if anyone grew up with one of these sticks, they bought at, like, K-Mart or something. Looking for some background if you know of some. Thanks.