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This model is the AHI Covered Delivery Truck in white.
The model is a two-piece metal body, 48mm in length. It has been molded with the cab and chassis casting having representations of the grille, lights and doors cast at the front, and the rear casting represents the deck and canvas cover. There is no glazing. The original wheels are plastic and attached to steel axles with crimped ends. They are held to the chassis by means of short columns that are pinch-crimped to hold the axle in place.
There is no baseplate as such and this cast toy has no manufacturer's marks or country of origin marked on it. The underside of the cab roof has what appears to be a mirror image of a "1" which is probably the mold identifier.
I do not know exactly when this item was issued but it would have been between 1950 and 1960.