Former club member that moved to Pensacola, Fl. Looking for ID help on this button my digging buddy dug with me yesterday. Was found in the confederate positions at Spanish Fort, Alabama. It reads " Excelsior 1847 CMI ALA" Scovill Waterbury backmark, I believe. Don't have a button book anymore, aand can't find an example online. Thanks for any help on ID and rarity!