I'm not sure if this will help, but I think it is neat that they have the slim and stout pictures side-by-side.
http://xfossils.com/cintipam/spyder.htm

Janey - Neat people never make the exciting discoveries I do.
Not affiliated with off-site link(s)

1904 Standard
 

Than you to all that commented on my thread.
Still would love to see a picture of bobbin holder for my 1904 Standard. It's the stout version. I want to make sure I don't order any more that claim they are for the Standard. Because I have plenty of bobbin holders now to I don't know what but there was no info to return them. ( My luck) . Thanks again, Sheree