Purchased new and not a scratch on it. Fun lens to have in your bag and has an amazing field of view. This is a manual lens meaning it doesn't auto focus, but the nice thing about wide angle lenses is you barely need to focus. Focus at 2 or 3 feet and everything is in focus. If you go do any Internet research, understand that Bower, Rokinon, and Samyang are all the same Korean company. They're known for affordable lenses that are very sharp, but most of them are manual. I've owned the 14mm wide angle which is an awesome lens as well.
FYI, that is just dust on the lens. I really should have dusted it before taking the pictures. Glass is pristine.
Let me know if you have any questions. Those that reply with a cell number for texting purposes will get priority response.