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Alcatraz Penitentiary - Classic Riker Box Specimens

Alcatraz Penitentiary - Classic Riker Box Specimens

This is an authentic fragment of concrete from Alcatraz Penitentiary. Yes, an actual piece of “The Rock!"

This specimen, from the famous Alcatraz island, saw some 1,500 prisoners pass by it during the prison's operation. An informational card that serves as certificate of authenticity is included.

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