Your Polsilver SI blade doesn't look right.
Yes. They are bought from Poland ( aprox 1$ for 5 blades !). I think I'm fake, but ... Bullgoose says something else ..https://bullgooseshaving.com/collections/de-razor-blades/products/polsilver-super-iridium-50-blades-the-last-dance?variant=34596985438357