Cowl Tag Info:

ST 73-4BP57Xxxxxxx   BDY
TR 446              66-66 PNT
xxx

ST-73 = 1973 Model Year
4 = Buick Motor Division
BP = Centurion
57 = 2 Door Hardtop
X = Fairfax, KS (General Motors Assembly Division)
xxxxxx = Body Number
TR 446 = Trim code - Saddle Vinyl Notchback Interior
66 = Lower body color (Taupe)
66 = Upper body color (Taupe Painted Top)
xxx = Built x week of  197x

VIN:  4P57T3X196099

4 = Buick Motor Division
P = Centurion
57 = 2 Door Hardtop
P = Optional 455-4 Engine
3 = 1973 Model Year
X = Fairfax, KS Assembly Plant
196099 = basic sequential production number (100001 was first built)

Notes: