Very interesting. ThanksTed Heaton wrote: ↑Sat Jan 29, 2022 11:00 amGenerally considered to be a dealer stamped indication that the vin tag has been replaced.
It was not consistently done and the letter varies.
Vin tags were replaced at years end on unsold 320 trucks, roughly up thru 1965.
Nissan sent new Vin tags with the top line Model For Year changed to the new year.