Oh manicmike thanks for the information. I definitely have a 27. Now all I need is a picture of how to thread the bobbin for winding. The shuttle is marked 8301 and is a wasp. Bobbin is 1-1/4" from round end to round end but looks like 1-3/8" from tip to tip. Don't know if that makes sense or not. Wonder if the bobbins are easy to get. I only have one.