Dice Puzzle

This puzzle looks simple and yes, can be used as a normal dice. But it also has a second function. It is a puzzle. Not too hard but it will take a few attempts. You basically put a small marble inside the hole that represents the "1" and it will disappear. Then to remove the marble, you must tilt and tip the puzzle just right to get the marble to reappear. This dice should be 4"x4".. so it may need to be scaled by 2540. Good luck