Waterbury Button Co button id help

[OpheliaN]

I found three of these little buttons that measure 1.5 cm, two of them are marked Waterbury Button Company on the back, the other is unstamped. They are very shiny. Any info is appreciated.
Thanks!
-O

 

[fyrffytr1]

Looks like a modern Coast Guard button. Here's a link:US Coast Guard - Eagles - Waterbury Button