vintage zig-zag sewing machine manual - booklet only

INSTRUCTION MANUAL ONLY Instruction booklet (38 pages) for a vintage Deluxe Automatic Zigzag. Printed in Japan. Includes how to use different feet. Built-in buttonholer. Built-in stitches. Three feed dog positions. Threading, oiling and adjusting tensions. The instruction booklet is for a metal sewing machine. I found a picture that is similar - it was a Riviera, but I don't know this is one. Please, check for yourself.