Scarce copper was created in 1758.
Scarce Swallowtail was created in 1758.
Scarce Fritillary was created in 1758.
Copper is a more scarce material than most other metals.
American pennies have been copper in every year except 1943, when copper was scarce and pennies were made of steel. These days, pennies are more zinc than copper.
The Copper Beech was created in 1992.
United Copper was created in 1902.
Copper Bull was created in 1923.
Copper Blue was created in 1990.
Copper Underwing was created in 1758.
Xingye Copper was created in 1998.
Jiangxi Copper was created in 1979.
Copper - MUD - was created in 1991.