An isolated case, this seems to be probably not, as can be seen other reviews. Because of changing lenses I have a larger diameter filter change and will set my B + W Circular Polarizing Filter F-Pro MRC AUCM DH 77mm. While this is significantly more expensive, but probably also for everyday use and high quality.
Strangely, I think in this context, the suggested retail prices of Hoya, which are always much higher than the general selling price in the trade and the selling price of B + W Filter ... That makes me the impression as if the manufacturer has a more advanced product unlike competitors pretend.