From the CS Navy.org site.
An existing 6.4-inch double-banded Brooke Rifle from the CSS Albemarle (the ship mounted two of them) was made at Tredegar Foundry in Richmond, Virginia. It was serial number 1854-- Year 1863.
Its weight was 10,420 lbs and was inspected by ADB (Lt. Aleaxander M. DeBree, Asst. Inspector of Ordnance, Richmond ordnance Works.)
Nine 6.4-inch Brooke Rifles still survive. Four are from the CSS Tennessee and one from the CSS Albemarle.