Fragments or splinters from the clockworks of German time fuses Zt. Z. S30 or S60. Very common, and importantly, they can also be found in areas where there was no fighting on the ground. These parts made of brass or non-ferrous metal literally rained down from the sky from the exploded anti-aircraft shells. Similar to buckshot when hunting, these parts, and of course the rest of the shell, riddled the planes with holes and caused them to crash. Often with the remains of the screw connections, springs or gears. The conductivity values vary from 49 for small pieces to 76 and up to 83 for large pieces, see my other article on this.