S&B seems to mark their brass with different markings than other manufacturers. For instance i was going through some range pick up brass and found some S&B 9mm Br. C., which stands for 9mm Browning Court which is the same cartridge as the 9mm kurz or .380 auto. I'm with everybody else though, there stuff is not the best to reload, but if it's what i have then i use it. Your stuff should be fine.