For those who might be interested, I have posted pics of my recently acquired (thanks, Ed!) 1950 Hobbs of Dagenham Sportsweight H.P. Club. It's wearing a beautiful metallic green repaint that shows off the fine filet brazing. The SA 4-speed hub is dated March, 1950. It would have been an option then.
http://pg.photos.yahoo.com/
Duncan Granger
Mountville, PA