This large, remarkable, crystallized copper specimen is wonderfully patinated by malachite and cuprite. The largest crystal measures 3.5 cm across. This old time specimen comes with the label of acclaimed Colorado mineral dealer, Lazard Cahn (died 1940), as well as the label of premier Bisbee collector, Richard Graeme and most recently the Stoudt collection in Texas. It is extremely large for a Bisbee copper and is crystallized throughout, front and back. 24.5 x 13.1 x 4.1 cm