Original U.S. WWII Manhattan Project A Bomb Bronze Workers Pin Japanese Awards Medals Badges Insignia (National Air Raid Protection League)

(National Air Raid Protection League) and was given status as an official national organization tasked with all aspects of civil air raid defense

with the original black finish still present

The inscription reads in seven lines

Over 2 million were sold before the model was discontinued in 1926

"What does this mean

Original U.S. WWII Manhattan Project A Bomb Bronze Workers Pin Japanese Awards Medals Badges Insignia (National Air Raid Protection League)Original item: Only One Available. This is a genuine bronze MANHATTAN PROJECT pin that was given to the workers who spent less than one year on the project. A sterling silver pin would be awarded to workers who spent over one year on the project. The design has a big "A" in the middle, for "Atomic." The castle shown on the bottom is the symbol for the Army Corps of Engineers. For this reason, the project's administrative headquarters building in Oak