The Protection Vault by Phil Herds

Let me start by saying this is extremely well made.  It is similar to John Kennedy’s Mystery box but it has the ability to be used for something other than a card. It can be a signed bill, or a prediction. The gimmick is interchangeable. The gimmick locks solidly in place so the box can be handed for examination afterwards. Comes with instructions.  It is 2.5x2x1.75.  I think you will like it!