Originally Posted by Charlee

Joe, I have a dumb answer for ya! A 9W is a 9W, no matter what the sub-number is. ~wink~ I have no idea what the sub number is on this one, but it looks like my machine too...except I know mine is NOT a 9W-7, because it has the donut bobbin instead of the FW style bobbin.

~shrug~ Too much to learn...not enough time to learn it all. I wish I had a better answer for you!