23mm, General Staff Officer button with 24 stars and four arrows in the right talon.  "Scovill Mf'g Co./Waterbury." backmark. This may be the best condition excavated Union Officers button that I have ever owned.  The amount of gilt is absolutely amazing! You might get a different kind in nice shape, but I doubt you will ever upgrade this one.  If you are looking for one great example, well here it is.