Scarce copper was created in 1758.
Scarce Fritillary was created in 1758.
Scarce Swallowtail 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.
Copper - MUD - was created in 1991.
Copper Angel was created in 1984.
Venus in Copper was created in 1991.
Yunnan Copper was created in 1958.
Copper - band - was created in 1994.
The Copper Elephant was created in 1995.
Copper Sunrise was created in 1972.
The Copper Scroll was created in 2006.