Today I received a set of Pennys that I had sent to him to have a complete tune-up on and since they were originally done in plasma, I had them coated in X-Metal instead. That being said, I couldn't be happier, but I have a few questions. I purchased these from a guy on eBay, and I'm sure Mark can testify after having them, that they are 100% legit. The issue is, there was no serial number on them when I received them. I don't know if it had worn off, or never came with one in the first place. I say that, because I read an article some time ago that said on very early generation Pennys, several actually went out with serial numbers. It wasn't until after the fact, that serial numbers started popping up on them. I don't know how true that statement actually is. I mean it made sense to me in text, but I just don't know how to feel about it. Unfortunately for me, I had been looking for a set of Pennys at the right price for 5 years before jumping on them. I had never actually worn them before, so I was unaware that they are slightly smaller than the Juliets, which fit my face perfectly. I'm in a position now, where I had work done to the glasses (which needed to be done badly), but now I want to sell them, so I can just buy a new set of Juliets. When wearing the Pennys in comparison to the Juliets, they're small enough that it looks like I'm wearing a set of children's glasses. It's not that they're too short, it's just that they're not as wide as the Juliets are. 1st question to you seasoned vets: Since there was no serial number on the glasses when I received them in Plasma, what does that mean exactly, considering that they are a legit pair? Are they an early first generation and the guy I bought them from just didn't realize what he had? 2nd question: How do I go about marketing these to sell? I'm no idiot, so I know how expensive Pennys in particular are, especially considering that they are getting harder to come by for a decent amount of money. Do I advertise them as being an original plasma, or do I market them as X-Metals, since that's what they are and always will be? Please, any advice would be greatly appreciated. It's the first time that I've ever owned a pair, and they are in absolutely pristine, like new condition, thanks to Mark. I need to know about this lack of serial number and what that means for what specific generation they fall into. The last thing that I want to do is mislead someone. I don't know if this helps, but I replaced the original lenses that came with it, with Ruby Quartz lenses, however the original lenses that came with them are the Ruby Iridium, NOT the Fire Iridium. Someone told me that the Ruby Iridium was only available on the first generation Pennys. I don't know how true that is, but it's what I was told. He also sent a second pair of Ice Iridium lenses as well. So now I've got a set of an unknown generation Pennys with no serial number, sporting Ruby Quartz lenses, with Ruby and Ice Iridium backups. Please help!