From my experience, (previous No5 article - thread 17.....) albeit very limited in number and even then, only to the actual metallurgy of a couple of the blades, you can't even say that F-10. That's because even a supposed fake had a 'correct' blade and bits. So was it punched-out on a small private contract by RFI in much the same way as they manufacture for the domestic/cookwars products market and for the motor industry in India? Clearly some will be made of duff/poor quality low carbon steel, look and feel wrong. But others, like one or two shown by Porterkids (thanks again.....) would pass a cursory glance especially if they fit etc etc
Interesting.