Sale Pending I have a never used 52mm Canon Drop-in Circular Polarizing Filter PL-C52 for Canon EF 300mm f2.8, 400mm f4, 500mm f4, and 600mm f4 IS lenses. I have taken it out of the box to look at it. I have never used it. I just never had the opportunity. It is new, in the orginal box. $140 with shipping and paypal in the contintental U.S. I will ship outside the U.S. to confirmed paypal address with buyer paying all shipping and paypal fees.
Also, I have an unused in the box Canon Drop-in Screw Filter Holder 52 with protective 52mm filter that I will sell for $45 if bought with the PL-C52 filter. Both are in their original boxes.