The CD range of bikes were the commuter iterations that Honda made for many international markets. The bikes were plain Jane with deeply valanced fenders, single carbs and usually 6 volt electrics. Hugely popular in the UK in the '70s and '80s. The 185 came along in the late 70s (although I don't know why Honda didn't use the 200 motor from the CB model....?)
The one in the pics may have come from the factory like that (??) in which case I suppose it would rank as one of the first modern retro-looking bikes.
fhttp://en.wikipedia.org/wiki/Honda_CD175