443 is a model designation for the 1928 Packard Eight. There were the luxury model 443 eight with standard dual side spare wheels, and a less elaborate 443 Standard Model, which was technically identical, featured rear-mounted spare wheels, and was only available with stock coachwork. All featured Bijur central chassis lubrication. Only available was Packard's largest, a 384.8 ci straight-eight delivering 109 hp.
443 stands for: 4th series (1928) Packard Eight, 143 in. wheelbase.