Voigtlander Color-Skopar 20mm F3.5 SLII N Aspherical For Nikon AIS Mount.

Very reliable lens.
Backed in original Kickstarter.
Exceptional manual focus.
My main use was mostly night-time landscapes and IR photography. Very pleasant bokeh.
Serial 9810042

Selling with:
Kenko Digital Filter, 52mm MC UV
Hoya Infrared (R72) Filter - 52mm

Selling to down-scale my camera collection.
For more items (lenses, extension tubes, remote trigger, StackShot)  - see my other items listed