A few years ago my friend bought himself an ingot of a zoo. Such gold bars were made for the Olympics in Sochi, in each ingot there should be gold of 999 tests. But after 4 years, my friend saw on his ingot of rust particles, after which he opened the package in which the ingot was located and realized that the ingot was not real. He was deceived by the swordsmen and four years ago he bought gold, gilded iron instead of real pieces.