Are all GEM stainless steel blades coated? I have two sets of blades, one from the recent B&B bulk purchase, which I know are coated blades, and one that I bought from AmericaRx. Both blades look alike: both say "GEM" on one side of the holder and "Stainless" on the other, and both blades are the same size. The carton from the bulk purchase says "coated"; the package from AmericaRx does not (see pic below). I'm trying to figure out if these are the same blade, or if one may be coated and the other not. Or, for that matter, if there is possibly any other difference between these two blades.
The reason I ask is that the blades from AmericaRx feel sharper and smoother to me than the ones from the bulk purchase -- well, I've only tried one of the bulk purchase blades so far, so I'm basing this on that one blade, which could be a fluke. Your thoughts?