Alcatraz Penitentiary - 2.604" Showcase Concrete bags This specimen is an authentic

This specimen is an authentic fragment of fossil dinosaur dung

it will be replaced by a 29-Specimen version

Remove surface dust with a clean

Above: Artist's Concept of the Tethys Sea during the Cretaceous (Source: Mini Museum)

564" Viking arrowhead mounted as a pendant necklace

Alcatraz Penitentiary - 2.604" Showcase Concrete bags This specimen is an authenticThis is an authentic piece of concrete from Alcatraz Penitentiary. Yes, an actual piece of The Rock!" This particular specimen measures 2. 604" along the widest point. This specimen, from the famous Alcatraz Island, saw some 1,500 prisoners pass by it during the prison's operation. A certificate of authenticity is included.