On a knife that old it’s difficult to say with certainty because there are few catalogs or other documentation, and many knives made then have not survived. I’ve never seen a legitimate Case from any era having script bolsters. Those I have seen stamped Case (in block letters) had both bolsters oriented the same, not one “upside down” as the OP knife has. In other words the factory made two separate dies for stamping bolsters whereas the OP knife was made using one stamping tool, hence one side had to be oriented upside down. Case Brothers knives I’ve seen had “Tested” and/or “XX” stamped on a blade somewhere.
So I believe the earlier assessment of it being a “fantasy knife” is probably correct. Having had it for 30 years doesn’t make it legit. I have a counterfeit Case Tested whittler that I’ve had for about 45 years - fakes were being made then!
It would be interesting to have opinions from those who have seen and documented many old Case knives (olderdogs1 and knifeaholic).
Welcome to AAPK cindylu, and thanks for showing the knife and giving us something to ponder!