One-off Rivarossi loco?

Hello from Down Under.

Reading the Rules I thought to myself, "This is just common sense", then I recalled the old adage about common sense that it is not very common! So, sadly, we need rules. C'est la vie!

Now I have what would appear to be a one-off green Rivarossi HO 1340 Meyer articulated loco. Nobody to date has ever heard of one, but it definitely has the look of a factory build. This green Meyer comes in a standard early 1340 red plastic box with clear lid and exactly the same writing as my black 1340 with shiny handrails. The chassis and buffer beams of the loco are red, the cylinders are a matt darkish green as is the boiler cladding, smokebox, cab and bunker. The buffers, front bogie/truck "platform", lamps, smokebox door, chimney, tank filler covers and cab roof are matt black. The bell is brass and the hand-rails are silver. On the cab side in gold in a cartouche (as is all lettering and numbering) is the Saxon id in lettering so small I can't read it, and under this what appears to be IV T. On the smokebox on either side near the base of the chimney is 1388. The larger low-pressure cylinders have a plate on them and I can't read that either until I dig out my binocular microscope.

I have fitted Kadee couplers to the loco with the gearbox front level with the buffers for good clearance. They don't look too bad.

I wonder if this is a very early issue or some sort of limited commemorative model as I have never seen another one. Nor has anyone else. Are there any Rivarossi collectors or historians out there that might know? If anyone is interested in helping me track down the history of my loco I could try to take some photos and send them on. However my photographic and computer skills are not what could be regarded as huge! I think I may have quite a rarity here.

Also I need a hex-headed screw that holds the motion and valve gear to the driving wheel if anyone has a junker 1340 they could take one off? Not for the green loco but a black one with black hand rails in a cardboard box. Also a parts diagram for the 1340 would be great. I can't find one anywhere on line.

Cheers,

Peter A. Meyer, Eltham, Victoria, Australia.

P.S. My surname may give you a clue as to my interest in Meyer and Kitson-Meyer articulated locos!