Hi guys you will properly not know this but that is a picture of a Model 1 HG Noble.Made exclusively for there Queensland department stores.These I believe were the only models to have this type of height adjuster.This one I believe was (Or could still be) the one from Rob Philips on Brisbane's north side.Here is another pictures I have seen of it.
[Linked Image]
[Linked Image]

Here for a good time,not a long time.