SN 2646980. Lens comes without any caps as pictured. The front thread size seems to be 52mm. Shipping is Free within USA and $15 via USPS first class mail worldwide. You can choose faster and more expensive shipping during checkout. Lens has light haze inside. But it still can be used. Light haze does not seem to affect image quality. It shows normal wear on exterior. Filter rim looks good and it accepts filters. Front Glass does not have any visible scratches. But glass coating is damaged inside. It seems that lens has been cleaned and coating has been rubbed off. Maybe original owner tries to clean the haze. So coating is damaged. But again, lens still can be used in as is condition. Glass looks OK. Performance: Lens has no known issues. Focus works good. Aperture blades open and close properly. Lens looks and works good. Lens comes with free and unconditional 90 day money back guaranty.