It appears that the primered rounds were never fired, but the bullets and powder removed. Some have some interesting headstamps. They include WW, UMC and Peters. Some are dated 1942 and 1943. One has the letters SC on the WW brass. Some, the copper in the brass has oxidized and turned green inside the case. And then there are those 2 ugly ones. Obviously I need to cull the pile, or should I just throw it all away. I am sure I will have to deprime it all. I am guessing that these primers are the kind that have those salts that cause rust. BTW half the brass is more recent and just needs to be deprimed and cleaned.