4 Y 87 U 3 H 484021
4 = buick
Y = Riviera
87 = 2 dr sport coupe (riv specific)
U = 455 4v dual exhaust
3 = 1973
H = Flint, MI
484021 = production serial #, are you certain these ser #'s begin with a '4' and not a '9'? most years Riv production starts at '900001' and goes up
ST73 4EY87FL1 154900 BDY
ST73 = 1973
4 = buick
EY = riviera
87 = 2dr sport coupe
FL1 = Flint, MI
154900 BDY = body serial #
TR 696 = saddle interior, maybe leather? book lists two codes for this line but doesn't differientiate between leather/cloth
81 = yellow beige paint
R PNT = dark brown vinyl top
1A = jan, first week production
AT7 = unknown
4 Y 87 U 3 H 424550
4 = Buick
Y = Riviera
87 = 2 dr sport coupe
U = 455 4v dual exhaust
3 = 1973
H = Flint, MI
424550 = production serial #
ST73 4EY82FL1 044666 BDY
ST73 = 1973
4 = buick
EY = Riviera
82 = should be 87, no convert option available this year, 2 dr sport coupe
FL1 = Flint, MI
044666 BDY = body serial #
TR 7695 = trim code is 3 digits, 695 would be white, i don't know what the '7' is
74 = burgundy paint
A PNT = white vinyl top to go with the interior
09E = Sept, 5th week production
AT7 = unknown
should be some nice boat tails you've got there. the second one looks to be very early in the production run (Sept. 72 production of the 73 cars)
The way to crush the bourgeoisie is to grind them between the millstones of taxation and inflation.
Vladimir Lenin
Government schooling is about "the perfect organization of the hive."
H.H. Goddard, Human Efficiency (1920)
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