I have a belt buckle, I think it is military. It is square, has the number 5 that is the entire face of the buckle, with an eagle holding a 5 pointed star over a horizontal anchor. Can anyone tell me what era it is from and what year and unit?
You might try a sub like /r/whatisthisthing. I'm not sure that folks here will be able to answer your question. If you post it somewhere else, please remember to post a picture too!