Incorrect.
This was from Bullgoose Shaving on their website.
Link to Bullgoose Shaving Polsilver Page
I still don’t necessarily believe it. Bullgoose isn’t the only vendor that has claimed these to be legit despite the obvious red flags. I have done deep research on this very subject. I have 400 of these questionable blades, and many more of verified legit Polsilver. And I still am not sure if these ones that say just EXTRA STAINLESS are counterfeit or not. There are too many red flags in addition to the missing print on the blades. The Y in Zyletek is wrong. The blades have numbers 1,2,1,2 printed on the corners of one side, which is very odd. Other weirdness with these as well, especially with the packaging and printing. Fonts, colors, lines... all a little off. I have tried a few, and the jury is still out. I would like them to be legit, but I really can’t say they are at this point.