Looking at a 68 GTS.......

You said VIN tag, but the codes you mention are 1969 up fender tags codes.

1968 & back fender tags are all in the ABC format.

And actual build days were not recorded back then.

Fender tag, yes, misspoke. What does a '68 fender tag look like - not familiar with the "ABC" format, and just want to be able to read/decipher it when I see the tag.

Thanks.