Matching numbers 68 dart questions

In 68 and prior the fender tag will not match the vin. The bottom row of the fender tag should match the core support and left rear quarter panel lip numbers (hidden numbers). The one on the core support is on the left side about 8 inches over if the antifreeze sticker is still there it is probably under it. The one on the left quarter panel is under the seal about half way down and can usually be seen from under. The bottom right of the tag will read *** xxxxxx with the first 3 being the scheduled production date and the last 6 being the VON (vehicle Order Number) or SO number.
I hope this helps clear it up as many think the vin should match the fender tag and in 69 that would be correct, but not earlier.