The picture below shows a larger front and back view of this Old United States Civil Defense National Security Award Lapel Stud Button. The screw back stud button is not dated and the year that it was awarded is unknown. It appears to be made of brass. It is painted red and blue with an image of a factory building with smoke stacks. It also has the Civil Defense “CD” emblem. The back section has a shield. It is marked on the two sides as follows:
NATIONAL SECURITY AWARD CD BASTIAN BROS. CO. ROCHESTER, N.Y. MPB PEU
The award buttonmeasures ¾'' wide. It appears to be in near mint to mint condition as pictured.