Alcatraz Penitentiary - SOLD 2.60" Showcase Concrete backtoschool2025 Please Note: You should not

Please Note: You should not expect to receive a perfectly round specimen

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

Washington is breathtaking to behold

with estimated ages between 140

but unmistakable

Alcatraz Penitentiary - SOLD 2.60" Showcase Concrete backtoschool2025 Please Note: You should notThis 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.