My grandfather worked for the Frankford Arsenal at the time of closing as a machine designer and engineer.
When I was a kid I was given a “silver bullet” from him and told to hold on to it. After he passed a few years ago I inherited a small box of the same rounds.
They appear to be chrome plated, but it could be nickel. I believe they were given to staff members as a parting gift when the facility closed. They are stamped “FA”, “1816” and “1977”; Frankford Arsenal, opening year and closing year of the plant.
Any thought of what these are, or any other information on them? I have never come across anything else like these and I am a loss on what to search for.