Cowl Tag Info:

ST 71-46667Yxxxxx   BDY
TR 461              29-? PNT
xxx

ST-71 = 1971 Model Year
4 = Buick Motor Division
66 = Centurion
67 = Convertible
Y = Wilmington, DE (General Motors Assembly Division)
xxxxx = Body Number
TR 461 = Trim code - Dark Blue Vinyl Notchback Interior
29 = Lower body color (Nocturne Blue)
? = Upper body color (? Convertible Top)
xxx = Built x week of  197x

VIN:  466671Y144679

4 = Buick Motor Division
66 = Centurion
67 = 2 Door Convertible
1 = 197 Model Year
Y = Wilmington, DE Assembly Plant
144679 = basic sequential production number (100001 was first built)

Notes: