Genuine Ford-Mercury Accessories for 1939. Notice that the full Stainless Steel 39 Mercury hubcaps says "Ford Mercury". That means that this must be a very early picture, as "Ford" was dropped from the name on the Hubcaps shortly after the all new Mercury went on sale. Also note that the 1938 Ford Spyder Hubcaps was carried over for 1939 Fords. In this photo, there is no mention of Grille Guards for 1939, meaning that the 38 Spyder Hubcap is correct for 1938 and 1939 Fords.