Aust. One Ton trailer info. required

[Monkey Man]

I just got a hold of one of these today, had the rounded bolt pattern for the square guards, still had the connector box, canvas stowage box lid, bows, rear extra tow hitch? and what's left of origonal? lights. My wheel and hub combination looks different to what any of you guys have.
It does have 2 brackets underneath it, flat steel with round holes in them, not sure what they are for, the reversing bypass for the brake is dead set simple, slip the little steel U shaped strap over and brakes are disables, slip it off and ointo the bracket on the side to store it. The Manufacture date is 21/10/59 (scratch makes it look like 69') and it's S/Nr is below 1000 as it is 1297 according to the chassis plate, manufacturers data plate says 0297 but Transport will want the chassis data plate info I should think....
It'll be behind my M37 (3/4 ton rated Dodge), it does tow ok but would probarbly tow better when I get some good tyres on the truck, anyone got any good 900-16's about the place?? (yes, it's a long shot but if you don't ask you never know.....)