Here are photos of the 1936 Ford Hubcap (top) and the 1937 Ford Hubcap (Lower). At a close glance, they appear to be the same, but as has been mentioned by CaliforniaBorn36, the V8 and outer ring are recessed on the 36 Hubcap and raised on the 37 Hubcap. The Ford Pilot Hubcap has a plain centre, no V8 emblem or ring.