It has been my experience that a person never knows he has a problem with vehicle identification, serial number/VIN until the problems arises, either via a vehicle sale/purchase or the relocation of the vehicle to another state, which required verification of the "VIN".
Case in point; my brother is the owner of a '37 Ford 4dr sdn, which he had owned for over twenty years here in CA. The car was "reputedly" a one owner barn find that my brother purchased from a well known local EV8F member.
My brother decided to move to Idaho taking the '37 with him. The car had to be inspected in Idaho to verify the numbers, serial and license. No problem on the license plates, the numbers matched the title/registration. A problem was found with the serial number, the number on the frame did not match the numbers on the paper work.
Mind you now my brother had owned the car for over twenty years and had the registration cards to prove it..
As a general practice, Idaho required a surrounding state "sweep" on the serial number, nothing turned up. California was contacted, CA records showed that the vehicle belonged to my brother with no question on the serial number.
A verification of the serial number on the frame revealed that the number was correct for a '37 Ford. The number on the title was also correct for a '37 Ford. It was obvious that the numbers on the title had not been altered, nor were they a typo mistake, the only assumption that could be made was that the title belonged to a car completely different from my brothers car.
Cool heads prevailed, Idaho issued a new title containing the number stamped into the frame, the original CA title was destroyed.
There is no doubt in my mind that the car is, was a "barn find", however, the truth of the matter is that the car did not have any paper work, someone, either the guy my brother bought the car from, or someone else secured a '37 Ford title, "marrying the two together" with no thought about the numbers matching.
When my brother contacted me about the number issue I got hold of the guy that my brother had purchased the car from, of course he denied any knowledge of there being a serial number issue.
What many people fail to understand, is that with the proliferation of information now available in the computer age, it is very easy to push a couple of buttons and up pops the correct number sequence for any given vehicle...