1969 Body Tag Data

If the trim tag has "S404" in what we call location H of the trim tag.
This decodes or means that on the 19th working day of the month
("S" is the 19th letter in the alphabet) that this Firebird was the 404th one
sent down the assembly line that day.


"The letter indicates the approximate day of the month for the start of the assembly of the vehicle body. 
It is only an approximate date because it appears that the day on the tag was actually when the vehicle
was being scheduled to be built. The actual start of production could vary by a few days."

Kurt Sonen


For those of you who don't want to count to your letter in the alphabet then here is a
list of the working day letter code meanings:
(there are also some symbols for the days past 26, like %, $, &, -, not sure which day they are)

A=1, B=2, C=3, D=4, E=5, F=6, G=7, H=8, I=9, J=10, K=11, L=12, M=13, N=14,
O=15, P=16, Q=17, R=18, S=19, T=20, U=21, V=22, W=23, X=24, Y=25, Z=26