Can't say who made it....if it isn't marked,it is not by anyone important ....but the blade looks like pattern welded steel. Sometimes called "damascus".
I doubt that the bolsters are hand engraved. That would have been a bit much for a cheap, Japanese knife of the era.
Damascus blade aside, it looks like a mass produced item from the 60s or 70s.
If you want to win an argument, it is best to stick to the truth.....or,at least, provable untruths.