I have a lot of old crowbars. Several are obviously hand made. There may not be a manufacturer who made these for the public, but possibly a company that needed them internally, like a foundry or rail yard. When I was young, an oldster pointed out to me that with punches, chisels, prybars, etc., that eight sided steel was better than six sided. I’ve always remembered that, He didn’t address four sided (Vlchek, Duro, Craftsman). The bends on yours indicate to me that they were not made by a tool company, but for industry.