That would be a model of an Ahrens-Fox pumper, ca. 1930s. They had the pump up front, with the distinctive air chamber above the pump. A photo can be seen here: http://nyfd.com/calderoneA/foxes2.html A-F built their own chassis, as did many of the major manufacturers, and they were notable for using only a single rear axle. The air chamber should be chromed, not gold color. Actually, all the accessories and fittings should be chromed, not gold. Maybe just a lighting/photo thing? May sound nit-picky, but it would greatly enhance the realism of an otherwise good-looking model.