Oppenheimer K-6 Badge

59mm Diameter

In the scenes set in Los Alamos, the New Mexico town selected for the Manhattan Project, characters can be seen wearing round badges with combinations of letters and numbers. These refer to the identification numbers they were assigned upon arriving at Los Alamos.

In actual ID photos taken for security purposes, you can see their number on the image. Oppenheimer’s was, in fact, K-6.