Don't always believe what guys at swap meets tell you. Regular 1/2 Ton trucks also used that cab for the first half of the '55 model year. The body changed mid-year, which is why '55s are referred to as either "First Series" or "Second Series". There are a few ways to tell a '54 from a '55 first series, such as the '55 bedside tops were flat instead of angled. The '54 still utilized a torque tube while the '55 had a open driveline. As far as the cab goes I don't know of any distinguishing differences. You are likely left to decode your numbers for any defining information. Either way, it is either a '54 or a '55 "First Series". Tell the know-it-all looky loos that it can be whatever they want when they put cash in your hand...
