I have no clue as to the distributor of this sewing machine, only that it was made in Japan. It appears either someone took the badge off the front or it never had one. I would guess someone just removed it, or it fell off. It could have been a Brother, Remington or Morse, or any number of other branded machines from the era.
In any event, here it is in all its glory.
I love the details on the nose cover. It would look so much plainer if it didn't have the added ribs and lines. It does straight and zig zag stitches. And notice the small pink lever to the left of the stitch length dial? BH - for buttonholes. This is the first machine I've run across with a lever like that. It remains to be seen if it actually still works as intended but I'm sure I'll find out soon enough.
The back is quite plain but I guess that can be said for most sewing machines.