Hey Guys, I'm not an X Metal guy like so many of you, so I need some help. If someone has a pair of Penny X Metal with Ruby and it doesn't have a serial, does that mean it came from warranty or is it possible that they were just a newer version. I'm sure there's a thread somewhere for this, but I didn't want to search through months of threads. Also, what's the going rate for these in decent condition without a box. Thanks!