This polarizing filter is used to increase colour saturation, darken blue skies so white clouds stand out, and eliminate reflections from nonmetallic surfaces like glass or water. It will also reduce the softness in scenery caused by atmospheric haze. This filter will not change the overall colour balance of a photograph. Filter factor: 3-4 or 1 2/3 to 2 stops

Condition is Near Mint. Frame is almost completely unmarked as is the glass. 

InternalReference: FILT 2058