Prims Lens FX "Split Diopter" filter 82mm (small crack in edge).  

Please see pictures to see small crack in the edge of the filter.  It doesn't register in the pictures you take since it's so far to the edge, but happy to discount the price from what normal resale value would be.  

Filter Otherwise in great functioning condition.  Comes with padded filter pouch.

SPLIT DIOPTER FX
Split Diopters have been used in the film industry since the 1980’s, typically to allow you to keep both your foreground & background in focus at the same time. What we’ve done is taken taken a +2 diopter and built it into a fully rotatable filter ring. With the diopter being much closer to the lens via threading directly on, it actually has the opposite effect — it creates an organic out of focus blur refraction to parts of your image!