Thanks folks!

I will try to get a better look at it in the morning. I have been to the Sheldon site (I went there before I found this site). Not sure what I am looking for there. I may have been transfixed by the photo

It is a single speed, if that helps narrow it down. The hub is strange looking to me. Has a large cylinder looking thing on one side.

For these BSAs, should I be looking at sites/articles about Raleigh? I read how they Were sold to them after '57 or something - but did they continue using the BSA brand?

I'm very new to this, and appreciate the help. Please forgive the newbie questions.