It's a very beautiful machine. I mostly got a run-a-round trying to find something about on the net, appears to be common in the 50's and 60's and suprisingly I found 2 different sites that said it was mady by Toyota. All the sites I found agreed that it was from Japan. Here is part of an article I found on a Stradivaro but not your model.
"The actual machine itself was made in Japan. It is a product of Toyota; this is clearly found on the machine, in the proper place, along with the JIS mark. Toyota Motor Corporation originally produced the machines (beginning immediately post-war), and production was later split off to a subsidiary company known as Aisin Seiki Co. Ltd. It appears that Toyota first began to break into the US market in 1962; in 1970, Aisin Seiki set up its own sales network. Thus, the intervening period was likely filled with re-branded machines such as this one, helping narrow its likely date of production."