I agree with ithinkverydeeply. I believe the W28, W46 are Warren date stamps. 1946 and 1928. Might be a couple in this thread.Yeah I think the newer one is all steel. But any idea what the large letters mean. Initials maybe? And any idea what the W28 and W46 mean?
https://www.bladeforums.com/threads/warren-axe-and-tool-company-march-manufacturer-thread.932040/
Hard to say on the large letters. Lots of company's and owners stamped in initials.