Alright guys, I don't know if you can help me here. I was talking with some friends, and we got on the subject of an old house one of them renovated. Anyway, he apparenly found upwards of a hundred pounds in Wilkinson Sword razor blades from the back of medicine cabinets of a house(circa 1950). Well I am into scrapping and metals and I was wondering if these are made of magnetic steel, or were they from 1950-1970.

Thanks