Someone using a metal detector has found a number of 7mm and 7.92mm Mauser fired cases and unfired cartridges that were dropped during the Battle of the Ebro, Spanish Civil War, 1938. They are from a number of countries. I have attached his headstamp drawings. The 7mm are the two headstamps at the top (PS 1918(?) and PS 1937) which were made at Pirotechnia de Seville, Spain. The remaining three rows are 7.92mm. I believe I have been able to identify the makers of the third and fourth cases on the top row of 7.92mm as Zbrojovka Brno (Brno (or possibly Bystrika), Czechoslovakia), and Metallwerk Wolfenbuttel GmbH (Wolfenbuttel, Germany) respectively, the third case on the second row as possibly Standard Electrica (Madrid, Spain)and the first case on the bottom row as Metallwarenfabrik Treuenbrietzen GmbH (Sebaldushof, Germany). Can anyone help with the unidentified ones, or perhaps correct any incorrect identifications I have made? Thanks.