Original U.S. WWII Manhattan Project A Bomb Bronze Workers Pin Japanese Awards Medals Badges Insignia Over 2 million were sold

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

All tinnies are offered in very good condition

with the original black finish still present

"What does this mean

It does not show signs of being worn

Original U.S. WWII Manhattan Project A Bomb Bronze Workers Pin Japanese Awards Medals Badges Insignia Over 2 million were soldOriginal 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