Graphite From World's First Chain Reactor 12-2-42 Acrylic Paper Weight

Description

Graphite From World's First Chain Reactor 12-2-42 Acrylic Paper Weight. ULTRA RARE!!! Paper Weight is 2.5 inches in diameter, and 1.25" thick. Piece is used, see picture. There is some very, very minor scuffing.
This is a very rare piece of the world's  first man made nuclear reactor to produce a self-sustaining nuclear chain reaction. A Most important step in the Manhattan project that led to the development of nuclear weapons used to end WWII.
Throughout the 1960's pieces of the graphite from CP-1 were awarded to important dignitaries and scientists who had worked on the project.
A most unusual scientific collectible.