They all seem to be different. Many appear to be military. There are mumerous sites that identify uniform buttojs, military, fire departments, etc. Woild suggest you take the time to research each one. You may have some real treasures here. Of course, the ones with anchors are Navy, but not necessarily US Navy, You can also Google "uniform buttons" and get lots and lots of images. Good luck. Hope you find some treasures. Uniform buttons can be highly sought after.
