The 1955-1957 Chevrolet featured a Vin Tag and Cowl Tag. The VIN tag was located on the drivers side door jam. The Cowl Tag was located on the Firewall.

Vin Tag (Vehicle Identification Number)

      Digit  Position               Represents
      ----------------                 -------------
        Manufacturers name listed first- Chevrolet
           #1------------------Engine & Size-V= V8

           #2------------------Series-A= 150
                                           B= 210
                                           C= Bel Air
                                           D= Sedan Delivery

           #3 & #4-----------Year -55= 1955
                                         -56= 1956
                                         -57= 1957

           #5------------------Assembly Plant
                     -A= Atlanta, GA         -L=Los Angeles, CA
                     -B= Baltimore, MD     -N=Norwood, OH
                     -F= Flint, MI               -O=Oakland, CA
                     -J= Janesville, WI       -S=St. Louis, MO
                     -K= Kansas City,MO  -T=Tarrytown, NY

           #6 - #11--------Sequential production number 
                            (Sequential production numbers - The starting number for
                         1955-1956 was "1001". The starting number for 1957
                         was "10001").

    Cowl Tag
 
   The Cowl Tag gave corresponding information pertaining to the body:
     

    Style No:     Indicates the year and body style

    Body No:     Letters represent Fisher body plant. Numbers represent the body number at that plant.

    Trim No:      Indicates upholstery color.

    Paint No:     Indicates exterior paint color.

    Top & Acc:  Indicates options car may have had, but not all plants stamped this.