Can any Forum member help to identify this shell. It measures 13.5 cm in length and 3cm across the base. The only markings on the base consist of an "E" at 12 o'clock and the letter "I" at 6 o'clock. The head appears to be made of lead? painted black. It has two grooves around the base above a copper band. Any ideas will be most welcome. Kind regards, Malcolm.