mccanlessj
Tenderfoot
Posted this on another forum but was unable to include pictures at the time. This is a coat size button with a superior quality backmark. Could this be civil war era or is it off an old band uniform?
Link says these were 40-50's band uniform buttons, same backmark :
http://www.etsy.com/listing/58123710/vintage-brass-buttons-6
Yours look to be a bit older than those shown.