ZERO 1965 Max Wedge cars

what letters are the numbers under?

A/3 *** B/0 *** G/1 *** J/5 *** V/3 *** etc.

B02 = 11/02/64 Scheduled Production Date
02043 = shipping order number

R32 = Belvedere II 2-dr hardtop

H1R = cloth & vinyl bench seat interior - RED
WW1 = mono-tone paint style - WHITE

P = Upper Door Frame paint - RED

R357136744

R = Plymouth B-body
3 = Belvedere II
5 = 1965
7 = St. Louis assembly plant
136744 = VIN sequence