How many 1953 Ford Mainline 4-Door Sedans were built?

There's no single, readily available source that gives the exact production numbers for a specific Ford Mainline 4-Door Sedan model from 1953. Ford's production records from that era aren't usually broken down to that level of detail publicly. You might find some general production numbers for the entire Mainline series for that year, but separating that out by body style would require extensive archival research.