Service Button | Collar Disc | US Armed Forces ? |
Service Button
The Service Button has an eagle and an anchor, with the crest of 13 stars around the edge. This button design has been in use since the Revolutionary War and is the button used on the dress uniform jacket.
Eagle, Globe, and Anchor (EGA) Collar Disc
This is apparently the right side collar disc (since the eagle is facing left instead of right).
U.S. Armed Forces Button
I'm not sure of the application of this button, but I believe that the emblem is the universal US Armed Forces emblem. Perhaps one of our military experts could help here ?