1914. An Australian family with their car, a 1911 Daimler. From the State Library of New South Wales archive.
This photo makes me think the 51 did not have full wheel covers; the last year. I do remember a large multi rib trim ring held on with the hub cap. The 52 was the first full cover!
Yes pretty sure '52 was the first year that Ford had full covers (optional). Hard to find them these days.