The Brass Coin Safe is a super new item based on an ancient puzzle. It is a brass box large enough to hold a coin, finger ring, etc. There is a hole in the cover of the box that lets you look into the box and see what's inside. Open the screw-on lid and ask a spectator to place his ring into the box. Screw the lid on and hand the box to the spectator. He is asked to remove the ring and return the box to you. Imagine his surprise when he is unable to open the box. A box he has seen you open and close right in front of his eyes! The Brass Coin Safe is a precision-made mechanical prop, machined from solid brass. It works on a really clever principle, and will withstand the closest examination. This is one you will carry with you all the time.