1945 United States Manhattan Project Silver Pin EXTREMELY RARE For Sale

1945 United States Sterling Silver Pin, awarded to Engineers who worked in the Manhattan Project for more than 1 year. Those who served for less than a year were given a bronze version, while silver specimens were awarded for those whose service exceeded one year. Quite rare in silver, with pleasing patina. An absolutely remarkable specimen from one of, if not the most, consequential period and scientific developments in mankind.