Any help appreciated. I says ollan and before that could be a Y and an A maybe. then cut co. Olean, NY I can not seem to find what the first part says by a web search,
Take a closer pic of the the tang where it is written from a different angle. But I’m thinking it says Clean Cut
Ka-Bar Cutlery from Olean NY. This was formerly Union Cutlery. From after the 50’s My best guess anyway.
And Union Cutlery had a trademark "OLCUT" which on some knives had "OLEAN CUT. CO." Maybe that is what is on the tang?