The book Tresor makes a stable impression. Inside the bag is a kind of small mailbox is installed without coin slot. The castle makes a high impression, which with violence and a screwdriver, it can be bend with security. I think it is also not safe to be sold, but rather not to be a money box to a few bills at home are too open. I am very pleased with this book safe. Not every thief is here equal to suspect a hiding place.