Thanks:
Due to the responses I found a little more info. I have the tag numbers. Can anybody tell me what they all mean. The numbers are:
ST 66-33817 BF04818 Body

TR 980 W2 Paint
C08 028851

Is this an F85 or a L78?
Thanks for the help
Roger & Bonnie













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ST 66-33817 Cutlass Holiday Coupe
BF Fremont Calif plant
04818 Body sequence number

TR 980 Black interior
W2 Paint Silver Mist Poly, black top
C08 028851 Unknown codes specific to Fremont plant

Is this an F85 or a L78? F85 is the general term for the A-body series, yes in that sense. F85 is also part of the name of the "lesser models" that are not a Cutlass. No, in that respect.
L78 is the option number for the 442 option. That can not be determined from data plate.

 

If you have a build sheet that code will appear in the MANIFEST box. Its the total number of Oldsmobiles produced at the Fremont plant on the date the car was made.