Because I know antiques, I also do my research. I have bought and sold for Many years. I can't tell you an exact date, but I am fairly certain it is circa 1960's. We own a couple of business' with antiques and vintage collectables as one of them. When you don't have "obvious" markings, as a collector you look for the "not so obvious" such as the "paper" Japan label on this piece. That is just one of the clues you can go by. You have to be a detective sometimes when you are a vintage and antique collector, because you are very right not everything has "obvious" markings. Thanks so much for checking out my auction. I hope I answered your question.