This is the very best polarizer used by professional photographers, the latest Mark II model.

I bought it last year in Japan but sold my lens that fits the 55mm size. 

A new one would cost you $100. And this one is just as good.

Thanks for your interest.

Below is some specifics from Marumi's site:

Marumi EXUS Circular PL

The Marumi EXUS Circular Polarizer is a flagship model polarizer especially well-suited to whom a high-polarization has taken precedence in the first place in polarizing (99.5%* degree of linear polarization under 400nm; *polarizing film only)

• Contrast-enhanced, more saturation provided, and blue sky will be vividly deepened.
• The High Transmission Circular Polarizer (HTC) performs approximately 93.6% maximum transmission rate and an averagely of 44%. (2.3 x Filter Factor, 1.2 stops, 400-700nm)
• The upmost coating technology implemented, eighteen layers in total on both sides;
• Anti-static coating (ASC) works wonders on the surface of a glass. Dust and dirt adhered to the surface can be quickly and easily blown off.
• Water-/Oil repellent coating shed water off simply also by the air blower. Nuisances such as sweats, skin crème, lotion, fingerprint, or compounded grease stains will be wiped off.
• ASC Coating and light-blocking ridges inside the ring reduce reflection rate under 0.6%. (420-680nm average)
• Realized an ultra-thin aluminum rotating structure to avoid vignetting.
• Teflon coating on male threads makes attach-/detachment to/from the lens more smooth.
• Knurling embedded on the lightweight frame enables easy and smooth handling
• Made in Japan, indurated lamination technology by decades of technical succession.