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This model is the Editions Atlas Dinky 520 Simca 1000 "Rallye 2" Prototype 1975 in dark metallic green and black. This model does not appear in any of the references I own, the reference number "520" being assigned to the Chrysler New Yorker as "520-F" and to the Fiat 600D as "520-H".
There are no opening parts on this model. The vehicle is adorned with silver painted bumper, grille and headlight lenses to the front, and silver bumper, red tail lights, and black number plate to the rear. The front bonnet is painted matt black and the rear engine cover carries black and white stripes.
The interior is all black, including the steering wheel and the glazing is clear all round.
All wheels are one piece, spun (?) metal hubs with separate black rubber tyre on domed steel axles which pass through the base plate.
The base plate is black painted tinplate metal that carries the legend "1/43  520; 75" to the centre top, "Simca 1000 Rallye 2, Dinky Toys, Made in China Editions Atlas © Mattel, "on three lines in the centre middle, and nothing at the centre bottom. It is held in place by two machined rivets, front and rear.
Exact issue date is unknown but thought to be circa 2015/2016.