Here's a 66s new old stock package that only says "high carbon steel" when you magnify it enough.
not sure which ones are in 440c that are referred to.
I saw a new old stock package for a Chicago Cutlery 7" American Pride Chef Knife from the '80s with the cherry wood handle. On the back of the package it said made from high carbon 420 stainless steel. I wonder if it is safe to assume that is what was used in these 42s and 44s knives...
I found a 42S and use it for a pizza knife. The edge has never held up well. After reading your comments I think I will also thin this one to 17 degrees and see what happens. How can you tell the USA 440C from the Chinese models. Is it by a stamping in the steel or on the handle? Thanks, Craig