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This model is the Dyna-Mo R.26 Horse Drawn Surrey which comes as a kit (minus horse) in unpainted form.
The model is a one-piece body molded with representations of the wagon bed, seating and side lamps, a separate casting forms the bar shafts and front axle, and then there are 4 cast spoked wheels.
There is no baseplate and there are no manufacturer's markings or country of origin on the model anywhere.
The model comes in a plain brown cardboard box. On the face of the box is printed the Dyna-Models logo to the left centre, " "Dyna-Mo" " to the upper right and "Dyna-Model Products Company, 75 South Street, Oyster Bay, Long Island, New York" on two lines at the centre bottom. The right end flap has "R.26" to the top left, "HO" to the top right, "Surrey" in the middle centre, and "35c" at the centre bottom. All text is in red lettering. The bottom side reads "Pinch ends of axle after installing wheels." All other sides are plain. I have assumed from the end flap the original price of the model was $0.35.
This model was issued circa the 1940s or 1950s.