Alcatraz Penitentiary - SOLD 2.60" Showcase Concrete backtoschool2025 A small information card is

A small information card is included with each specimen that also serves as the certificate of authenticity

61" fossil pair from the Tethys Ocean

Two Jurassic dinosaur fossils

but then so was Pyroraptor

with estimated ages between 140

Alcatraz Penitentiary - SOLD 2.60" Showcase Concrete backtoschool2025 A small information card isThis is an authentic piece of concrete from Alcatraz Penitentiary. Yes, an actual piece of The Rock!" This particular specimen measures 2. 60" 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.