Rare Panel Style Bartram &Co Nimrod Black Powder Flask Riling 540 c.1850 TR1849 For Sale

Civil War Era Sheffield England Bartram & Co with Nimrod Logo, c. 1860-1871, Riling #540, Black Powder Flask, copper, Two sided design pattern on both sides, excellent working with 4 slot graduated cut-off , Company markings on the top cap which is brass Riling #33. Shows a dark and light edge age patina around seams, some tiny minor scattered dings around the bottom oval areas. Very nice condition piece. See photos for further details and clarification.