What's the easiest way to make your infantry impression a heavy artillery impression for Appomattox?  Just swap the buttons on your blue grey wool Richmond jacket.
 
These buttons are excellent reproductions of the crude locally-made artillery buttons commonly dug at ANV sites.  They feature an uncoated red brass or copper face, not bright yellow brass, and a tin back just like the originals.  
 
Buttons will come in a sets of 11 and will be mailed to you.