Mark is spot on, that slide plate is probably the same one used by the Singer 66 /99 and many other Japanese machines.
That machine should also take the Class 66 bobbins. Don't buy the ones at JoAnn or the other big box stores as they are hit and miss. Some won't even fit the older machines. If you order from Sew-Classic, pick up some Tri-Flow oil too.
That machine will purr for you.
Joe