Jools, I have a 117K and can take some pictures. .
Have been looking at your picture and have a few questions
Do you have the feeddogs?
Do you have the shaft to hold the hook assembly and bobbin case? Comes out of the "box"
The washer looking item on the table appears to be the back of the bobbin hook assembly . We can't see the other "bits" in your picture. Could they be the rest of the hook?