Of course this sword is a "Showato", I never stated that it wasn't. The debate is whether it is oil or water quenched. As I said, I need to have it in hand before I could make my final assessment. Here's the definition of a Showato from a regarded sword web site.

Showato - "Showa era sword" (this term refers to any sword made during the Showa era, 1926 to 1989, not to whether it is handmade or not.)