#1nonnie yes that is a Singer model 15 clone. After WWII the Japanese were given (or sold?) permission to copy some US manufactured goods in order to rebuild thier economy. Singer model 15 sewing machines were 1 item that Japan copied after the war. I don't know anything about all the details but that's how it started. By many accounts here the 15 clones produced in Japan are every bit as good, perhaps better than, the ones Singer made themselves.
You may want to take a look for the thread "Will the Real 15 Clone Please Stand Up". There may be more info there for you.
Rodney