From Seacoast Artillery.
Three treble-banded Brooke guns produced at Tredegar Works in Richmond. One, No. 1597, cast on June 13, 1862, installed on the CSS Richmond in November 1862. Before that, it was successfully tested by its designer John M. Brooke and Lt. Alexander DeBree.
It appears that the other two were shipped to Charleston, South Carolina. No. 1706, cast Dec. 6, 1962 was destined for the CSS Charleston but probably diverted by General Beauregard for harbor defense.