Thanks Robert.
It's that case. I think it's a Friodur but without the possibility of put the name Friodur. Friodur is a trademark of Henckels and it refers to the cryotreatment. I think this blade is cryot...
What luck Robert!
My wife is not able to advise me in this issue, and she does not understand how I have more than a soap, more than a brush and more than a SR, if I can only use one at the same time.
Angel