I have seen guys put a lot of time in on making a knife out of
unknown steels. What they usually end up with is a very classy
butter knife. I recently bought some old tool steel blanks.
2"x16" in different thicknesses. The brand is Simmons and each
piece is individually wrapped. There is heat treating information
on the labels. It is given by the color of the steel under heat. In
present state it can be filed. I'm guessing this stuff came from
the 1950s, blanks have fine rust on them but no pitting. I'm
going to make a blade out of this and take it to a shop that has
controlled tempering to have it done.