Hi, I posted a query on the mines forum about a piece of metal I found when metal detecting on a beach where there was a artillery during WW1 & WW2 I've already found several bullets there and a map I've seen showed barbed wire entanglements on the beach my first thought was that it was a piece of a mine so I posted in the mines forum but a member there posted a picture of a gun cotton container and it's seems to be a really good match. Could someone here confirm and tell me how it was used. I've googled it and apparently the center nut could be removed and a fuze inserted the metal is copper and it has no markings. Picture on web in my signature.