If anyone has any info on the dating of those Old Hickory blades please let me know. I’ve seen them listed as 1950’s and 1930’s. I’m more inclined to think the 1930’s because of the carbon steel and the shape of the center cutout. I think the cutouts were pretty much standardized by the 50’s.
My razor blade reference (Krumholz) had no dating information. I'm guessing late 30s, based on the revival of Old Hickory upon the prompt post-Prohibition founding of Continental Distilling Corporation in 1933. Also there is the possible Segal compatibility of the blades. Maybe post-war for a few years, when steel was available.
There seem to have been several varieties of Old Hickory blades. But by the 50s the economy was brisk and shaving was headed away from single-wrapped advertising blades.
Reading up on Continental Distilling Corporation and its parent, Publicker, was pretty fascinating from a Superfund/industrial hazmat negligence standpoint.