It looks very promising. I can't make sense of the bobbin case assembly, except for the missing bobbin case. It's large! I consider my 201 on the heavy side.
My internet is acting up today, preventing me from accessing sites on the web, but it looks like there's a similar machine to yours on ebay. Maybe you could contact the seller for info and comparsion of the hook and race assebly, as well as bobbins? I'm just thinking out loud really, but it crossed my mind when I found the pictures.
You have probably seen it, and this is a rather random attempt at a
link, since it's not working properly at the moment.