ok - here is the "slim" and it looks like you have all the parts with yours
And the bobbin case - I was pretty sure I had extras . . . and I was right. Actually have the whole shuttle race assembly.
This is the "stout"
and bobbin case, totally different from the back side.
The two together. Though the bobbins look quite different, they fit in both cases, though I did not try to sew with them that way.
BTW - what is your serial number? I was wondering if yours will take the chain stitch spider - this is it with the special needle plate to use with it. It fits into the shuttle race instead of using the bobbin case. I'm pretty sure I've got an extra one of these around somewhere. I know I have two sets for the Stout machine.
Did you get any attachments for your machine? I've got some extra (along with the extra bobbin case) so if interested, send me a PM - others can attest that I'm very fair at what I let my extras go for - I don't purchase to sell, but I do end up with extra stuff in my search for specific attachments.
BTW - I did "win" what I was after - a box of New Home Rotary attachments. Not that I need more of those, but tucked into the box was a Boye Hemstitcher attachment WOO HOO!!! I'm happier about that then snagging the Domestic Cording foot attachment earlier this week.