Was given a great gift this week. My MIL's boyfriend brought this gem to me, knowing that I prefer stones over mechanical sharpeners. It appears to be an old Norton and I'm guessing it is from at least the 50's, and possibly way older than that based on the heavy cast iron base. The stones are all in great shape with no cracks or even chips, and only slightly worn from light use. Not that I will ever sell it, but was wondering if anyone knows the age and value of a piece like this?