There are three different things at play here. Polarization, A/R(anti-reflective or non-glare), and UV protection. Polarization, as has already been defined above, blocks waves not aligned with the filter, thus providing the wearer with clearer, crisper, less visually 'noisy' images. This is an internal feature in the lens. A/R coatings are applied externally, generally just to the back side, to reduce glare on the back of the lens coming in from behind or from the side. There are different brands of A/R with different prices, some combined with scratch and smudge resistance. Some of these, such as 3M's Scotchgard A/R, are proprietary and can only be applied by licensed labs thus demanding higher prices. The percentages advertised with lenses refers to UV protection. Nothing comes out of our lab with less than 96% of UV blocked. We test every lens individually as part of our QC. Polarized lenses, because they filter ALL incoming waves, genrally block more UV as well. For example, our polycarbonate lenses genrally block 97% of UV transmission, while the polarized lenses block 99%.
'07 Single Ring Old Type, '21-'29 Gold Old Type Ball End Handle, '28 New Standard Gold, Gold NEW Ball End Handle(long teeth), Gold NEW Common Bar Handle(short teeth), NDC Gold Tech(3), '59(E2) Red Tip
GEM Micromatic Open Comb Antenna Handle, Schick G1(2), Schick G8, Rolls Razor Imperial No.2(5), Rolls Razor Viscount(3)
A. White CopperHead 6/8, D. Peres 5/8, Hamburg No. 49 6/8, Wade & Butcher 6/8, German Cutlery Co. 5/8, Wosty Pipe 5/8 wedge