I have had my hands on approx. 10 or so Pak 40 cases in good condition in the last three years. I have yet to see one with a copper wash or brass plating finish. They appear to have a brown lacquer or light grey finish to them. Does anyone have any examples of a German made brass case or one with a nice copper/brass finish remaining? What variations do you find in Europe? I have had my hands on a very nice brass Pak 40 case, but it was French made and dated 1962. For comparison purposes, I have approx. 60 nice Pak 38 5cm and 10 x 7,5cm KwK cases with excellent brass wash/copper plating finishes. None of my Pak 40 cases have a finish like these. Your input is greatly appreciated.