Thank you for that little history lesson, Miller! I really appreciate it. It answered a lot of questions and brought up some new ones! I'm guessing mine is a later 9W7 (flat bobbin) based on my serial number, but the few quick snaps I took of it were not that detailed. I'll definitely open it back up and check for which bobbin it takes.
Thanks again, and FWIW, I'll happily chip a little in if you all decide to take up a collection for more storage space.??
Cheers!
Stephanie S