The Doomsday Clock is a symbol which represents the likelihood of a global catastrophe referred to as "midnight". It has been maintained since 1947 by the members of The Bulletin of the Atomic Scientists' Science and Security Board. The year 2017 is the closest the clock has been to "midnight" since 1953.
The concept of the Doomsday clock was brilliantly utilized in the 1986-87 twelve part comic book series "Watchmen" by Alan Moore and Dave Gibbons.
Limited Edition enamel pin
Hard enamel black nickel metal with 3 color fill and a rubber clutch.