Board Thread:Questions and Answers/@comment-32818297-20170810015440

So I did some work for this guy, and he gave me this in return. The thing is I have no idea what it is. It is a huge grey box I can lift up and the has in very small text written number 12 on it.

I know that stuff like the ball/marble things have Numbers on them but I am not quite sure what the numbers mean.

PS I can open the grey box but I don't want to because it will loose it's price (if it even has one)

I linked the an image of the box he sent me

Someone help me out, thanks :) 