This is a reputable online seller:
http://www.sewingpartsonline.com/bob...102261103.aspx
You can click on your specific model here:
http://www.sewingpartsonline.com/jan...odel-list.aspx
and then see all of the parts that fit it. Going this route, you might find OEM as well as non-OEM bobbins.
Bobbins are extremely machine specific. Even very small differences in size or shape will adversely affect stitching, and some bobbins will actually damage machines.