One of our members showed me boxes of NOS cell rot HESS razors that were that bad of worse!
Krackle is bad news as are the black wedges of those manufacturers. Also on the iffy list are torti scales where the clear is bad and makes its outlines on the blade metal. HESS, DD, and some others are notorious.
Poor young sap in the posts had to learn the hard way as I did!

~Richard