The box shown here is for the Dinky Toys #512 Guy Flat Truck model.
It is an early type 'Supertoys' style, plain board, lid & base type box, with the red label with B&W model illustration.
It is for all colours of the early post-war #512 versions of the model.
If your model is the later type #512 (912) version of the model with blue cab & red rear, or red cab & blue rear, please see our other listings under this model number.