This undated photo provided by Morphy Auctions shows a detail of the 127th Regiment United States Colored Troops battle flag in Denver, Pa. The flag was carried into battle by one of the 11 black Union regiments during the Civil War is going up for auction in Pennsylvania. The flag was painted by David Bustill Bowser, an African American artist who was a member of one of the regiments and the son of a fugitive slave.