There are no framebacks pictured in this thread so far. So, what you were calling a frameback is in fact not one. If you are curious about framebacks, that's good! They are beautiful razors to collect shave with. There are several threads devoted to framebacks and the sometimes confusing terminology around them. Here's a couple...
http://straightrazorpalace.com/razor...-fanciers.html
http://straightrazorpalace.com/razor...enclature.html
I'm hoping we see a John Bagshaw frameback from somebody soon!