WYOMING Goldback 5 note Aurum (10 Pack) - 24k Gold Bills*Includes ten (10) of the Goldback 5 denomination bills The Goldback is made of a spendable, beautiful, physical gold. Through the use of cutting edge technology, gold atoms are evenly adhered to a strip of polyester, which is then covered with a thin, durable laminate. Unlike gold foil, a Goldback is made with precision and consistency, which is important when dealing with fractional amounts of gold. Goldbacks come in 1, 5, 10, 25, and 50