quiltdoctor,
Yep, that's a 9W-7 and should use the straight sided 221 / 201 bobbins. It will use the 127x1 or MY 1014 B needles.
I have two of them. Nice machines, but the one thing I don't care for is they turn backwards of every other Singer. Once you get used to them the other Singers will bring you up short when you turn 'em the wrong way.
Joe