1969 dart body ID stamping question

There is a 1969 Dart on ebay right now that has the fender tag and VIN that says it was a 383 car, but the ad says that the radiator support and the trunk lip numbers match the SO number on the tag. I thought 1968 Darts had the SO number on the radiator support and trunk lip, but 1969 Darts had the last 9 digits of the VIN on the radiator support and the trunk lip. I asked the seller, and he said it had the SO number because it was an early production car. Has anybody ever seen a 1969 Dart with the SO number on the radiator support and the trunk lip instead of the partial VIN?