Do the early model CB 750 have a different Vin plate than the later stamped ones, My brother came across a CB out in western Nebraska and I asked him to look at the Vin plate on the neck to tell what year it was and he said it did not have one and he said there were no rivits where the plate should be, I'm having him go back next week to write down the Vin. I thought they all had the same Vin ,ID.......