Minor wear elsewhere as shown by numerous pictures of the box. Please note that we haven't tested whether the game holds a save, so you might need a new battery (this is inexpensive, and we can recommend a service that does it for you). Yes, Pokemon Silver is a region-free game so it will work on any compatible console from any region.
Not sure if it will work on your console? We pride ourselves in our careful packaging with plenty of bubble wrap and additional protection, to make sure your game arrives you in exactly the same condition we placed it in the package.