Mario Golf Advance Tour bootleg?

I was going through my GBA games to sell on eBay, and I found this:

The label lacks any seal of approval or anything, and doesn't say what region it is. It's also different to the labels I see on Google Images. Is this a label from another region and it's not on Google or is it bootleg?

 

I hate to tell you this but ot is bootleg.

 

Gah. Guess I can't sell it on eBay then

Thanks for helping!