Fantastic find. That looks to be a machine that one would definitely need a manual for. At first, when I saw needle plate I wondered if it was like a Necchi SuperNova. Then I took a look and thought that maybe it turned around for straight stitching or zigzag. Then I realized the needle plate actually moves??? when it is set for zigzag. I will have to watch the video at
https://www.youtube.com/watch?v=UNXX7O7cWTc There is another one that needle plate moved that is badged differently but has that movement
Nelco Amica
Have fun. Would like to see some pictures of how it sews.
Does your cabinet have the ink well in the upper left drawer?
Janey - Neat people never make the exciting discoveries I do.