I believe these are Australian Decksons, made by John Deck and ... sons. There are a couple on offer on eBay HERE. There is a restored one on YouTube HERE. I guess it was made to an American design HERE.
Hopefully a member will be able to supply more info.
Hope this helps. ---------------------------- JACK.
Last edited by CyberJack; 17/03/1509:46 PM. Reason: Updated information.