SWB you'll get a pristine one for R30,000 odd if you buy it from a fanatic who is willing to part with it. A pal of mine did and when he's finished his tour of Africa, the seller said he would buy it back. I haven't seen any III LWB's.
I had a couple series threes in my day. One in the UK and one when I moved to SA. They were both LWB though - I'd have loved a SWB. Maybe one day. Enjoy!