The Isis Adventure

Do you get to keep the Pyramid box if you find it?

No!
You can take a (gold or silver) coin out of the pyramid, but the pyramid stays where it is, for others to find it too.
Pyramids typically contain 1 gold coin and 10 silver coins when they are placed.
See the terms & conditions for official information (which may and does change over time).

You can (or at least could) buy a pyramid box, which is very similar to the ones used by SonicWarp.
Of course it does not have the lock in it, and it also does not have the black coating inside.
My avatar shows (part of) the pyramid I bought. More pictures are available in the 5% club.

I was looking at the photos and assumed everyone who had one won it. That is why I thought you get to keep the box. Thank you for your input.