I don't have a rub. I simply asked if there was something specific you were looking to find out about the prefix and you seemed to think I was being accusatory. Aside from manufacture date, I'm not sure what else anybody here could tell you about the prefix, that's why I asked. I'm not a mod so I have no clue why your previous thread was locked, just suggesting that maybe it would have been a good idea to find out why before starting the same thread again. Good luck with your search Wanna kill these ads? We can help!