You get a Carl Zeiss Jena Flektogon 20mm f/4 In Nikon F Mount. Serial number 6770346. The focus and diaphragm are smooth. No oil on the blades. No fungus, haze or scratches. Caps are included. Free USA shipping. All other buyers pay actual shipping costs. Regards, Darryl

The cosmetics show use, but it has not been abused. Around the edges of the glass there looks to be some coating degrading when looking at reflected light. 

I prefer to sell this lens is AS IS condition because buyers see what they want to see so please do not expect perfect.