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This model is the Castle Art Gaiety Toys Single Seat Brooklands Racer in a polished metal finish.
The model is a one-piece metal body, 130mm in length. It has been molded with representations of the grille, radiator cap and a manufacturer's logo at the front, 6 exhaust pipes in each side of the motor housing, a solid windscreen, cockpit with steering wheel and driver's head and shoulders and finally at the rear a petrol cap. There is no glazing. I believe the original wheels may have been replaced by black plastic, one piece molded "hub and tyre" style wheels, which look out of place to me. I was expecting such a model to have metal wheels as a result of seeing an identical clockwork toy by Castle Art with metal wheeels, but I have also seen the Castle Art clockwork toy with black plastic wheels (of a different shape to those on this model).
There is no baseplate however the inside of the casting is marked with "Gaiety Toy Reg." on the first line, "A Castle Art Product" on the next two lines, "Birmingham England" on the fourth and fifth lines, and finally "Trade [Castle image] Mark" on the last three lines, under the bonnet of the model. It is possible this casting is the same as used for the clockwork toy but without the key hole, as it is cast with two small pins, either side of the underside of the cockpit, where a clockwork mechanism might be attached.
This model casting has been chrome plated rather than polished as evidenced by the chrome flaking off the lower surface of the body.
I do not know when this item was issued but believe it to be circa 1960s.